- •FEATURES
- •DESCRIPTION/ORDERING INFORMATION
- •DESCRIPTION/ORDERING INFORMATION (CONTINUED)
- •Absolute Maximum Ratings
- •Recommended Operating Conditions
- •Electrical Characteristics
- •TYPICAL CHARACTERISTICS
- •TYPICAL CHARACTERISTICS (continued)
- •APPLICATION INFORMATION
- •Device Operation
- •Minimum Load Requirements
- •FB – Pin Connection (Adjustable Version Only)
- •External Capacitor Requirements
- •Programming the TPS767D301-EP Adjustable LDO Regulator
- •Reset Indicator
- •Regulator Protection
- •Power Dissipation and Junction Temperature
TPS767D301-EP
www.ti.com SGLS327A –FEBRUARY 2006 –REVISED APRIL 2010
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
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MIN |
MAX |
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V |
Input voltage range(2) |
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–0.3 |
13.5 |
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I |
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VI |
Input voltage range |
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1IN, 2IN, |
EN |
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–0.3 |
VI + 0.3 |
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VO |
Output voltage |
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1OUT, 2OUT |
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7 |
V |
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RESET |
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16.5 |
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Peak output current |
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Internally limited |
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HBM |
ESD rating |
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2 |
kV |
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Continuous total power dissipation |
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See Dissipation Rating Table |
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TJ |
Operating virtual junction temperature range |
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–55 |
150 |
°C |
Tstg |
Storage temperature range |
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–65 |
150 |
°C |
(1)Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)All voltage values are with respect to network ground terminal.
Table 2. DISSIPATION RATING TABLE
PACKAGE |
AIR FLOW |
TA ≤ 25°C |
DERATING FACTOR |
TA = 70°C |
TA = 85°C |
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(CFM) |
POWER RATING |
ABOVE TA = 25°C |
POWER RATING |
POWER RATING |
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PWP(1) |
0 |
3.58 W |
35.8 mW/°C |
1.97 W |
1.43 W |
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250 |
5.07 W |
50.7 mW/°C |
2.79 W |
2.03 W |
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(1)This parameter is measured with the recommended copper heat-sink pattern on a four-layer PCB, 1-oz copper on 4-in × 4-in ground layer. For more information, refer to TI technical brief literature number SLMA002.
Recommended Operating Conditions
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MIN |
MAX |
UNIT |
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V |
Input voltage(1) |
1IN, 2IN |
2.7 |
10 |
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I |
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I |
Output current for each LDO(2) |
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1 |
A |
O |
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VO |
Output voltage range |
1OUT, 2OUT |
1.5 |
5.5 |
V |
TJ |
Operating virtual junction temperature |
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–55 |
125 |
°C |
(1)To calculate the minimum input voltage for maximum output current, use the following equation:
VI(min) = VO(max) + VDO(max load)
(2)Continuous output current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time.
Copyright © 2006–2010, Texas Instruments Incorporated |
Submit Documentation Feedback |
5 |
Product Folder Link(s): TPS767D301-EP
TPS767D301-EP
SGLS327A –FEBRUARY 2006–REVISED APRIL 2010 www.ti.com
Electrical Characteristics
Vi = VO(nom) + 1 V, IO = 1 mA, EN = 0, CO = 10 mF (unless otherwise noted)
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PARAMETER |
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TEST CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
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1.5 V ≤ VO ≤ 5.5 V, |
TJ = 25°C |
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VO |
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Adjustable |
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TJ = –55°C to |
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10 mA < IO < 1 A |
0.97VO |
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1.02VO |
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V |
Output voltage(1) |
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125°C |
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V |
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O |
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TJ = 25°C |
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3.3 |
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4.3 V < VI < 10 V, |
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3.3-V output |
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TJ = –55°C to |
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10 mA < IO < 1 A |
3.201 |
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3.366 |
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125°C |
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Quiescent current (GND current) |
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10 µA < IO < 1 A, TJ = 25°C |
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85 |
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mA |
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for each LDO(1) |
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IO = 1 A, TJ = –55°C to 125°C |
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125 |
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VO/VO |
Output voltage line regulation |
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VO + 1 V < VI ≤ 10 V, TJ = 25°C |
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0.01 |
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%/V |
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for each LDO(1) (2) |
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Output noise voltage |
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BW = 200 Hz to 100 kHz, VO = 1.8 V, |
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55 |
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µVRMS |
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IC = 1 A, CO = 10 mF, TJ = 25°C |
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Output current limit for each LDO |
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VO = 0 V |
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1.7 |
2 |
A |
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Thermal shutdown junction temperature |
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150 |
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°C |
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2.7 V < VI < 10 V, |
TJ = 25°C |
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1 |
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Standby current for each LDO |
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TJ = –55°C to |
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10 |
mA |
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EN = VI |
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125°C |
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FB input current |
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Adjustable |
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FB = 1.5 |
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2 |
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nA |
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High-level enable input voltage |
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2 |
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V |
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Low-level enable input voltage |
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0.8 |
V |
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Power-supply ripple rejection(1) |
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f = 1 KHz, T |
= 25°C, C = 10 mF |
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60 |
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dB |
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J |
O |
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Minimum input voltage |
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IO(RESET) = 300 mA |
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1.1 |
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V |
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for valid |
RESET |
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Trip threshold voltage |
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VO decreasing |
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92 |
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98 |
%/VO |
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Reset |
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Hysteresis voltage |
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Measured at VO |
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0.5 |
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Output low voltage |
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VI = 2.7 V, |
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IO(RESET ) = 1 mA |
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0.15 |
0.4 |
V |
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Leakage current |
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V(RESET) = 7 V |
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1 |
mA |
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time-out delay |
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200 |
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mV |
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RESET |
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EN |
= 0 V |
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–1 |
0 |
1 |
mA |
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Input current |
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EN |
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EN = VI |
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–1 |
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1 |
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Load regulation |
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3 |
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mV |
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Dropout voltage(3) |
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TJ = 25°C |
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350 |
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V = 3.3 V, I |
= 1 A |
TJ = –55°C to |
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575 |
mV |
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O |
O |
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125°C |
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(1) The minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. The maximum IN voltage is 10 V. |
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(2) If VO ≤ 1.8 V then VI(min) = 2.7 V, VI(max) = 10 V: |
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Line regulator (mV) + |
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VO VI(max) * 2.7 V |
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% V |
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1000 |
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100 |
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If VO ≥ 2.5 V, then VI(min) = VO + 1 V, and VI(max) = 10 V:
VO VI(max) * VO ) 1 V
100
1000
(3)IN voltage equals VO(typ) – 100 mV; adjustable output voltage set to 3.3 V nominal with external resistor divider. Dropout voltage of 1.8 V and 2.5 V is limited by input voltage-range limitations.
6 |
Submit Documentation Feedback |
Copyright © 2006–2010, Texas Instruments Incorporated |
Product Folder Link(s): TPS767D301-EP
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TPS767D301-EP |
www.ti.com |
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SGLS327A –FEBRUARY 2006 –REVISED APRIL 2010 |
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TYPICAL CHARACTERISTICS |
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Table 3. TABLE OF GRAPHS |
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FIGURE |
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Output voltage |
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vs Output current |
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3, 4, 5 |
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vs Free-air temperature |
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6, 7, 8 |
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Ground current |
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vs Free-air temperature |
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9, 10 |
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Power-supply ripple rejection |
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vs Frequency |
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11 |
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Output spectral noise density |
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vs Frequency |
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12 |
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Output impedance |
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vs Frequency |
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13 |
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Dropout voltage |
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vs Free-air temperature |
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14 |
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Line transient response |
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15, 17 |
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Load transient response |
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16, 18 |
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Output voltage |
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vs Time |
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19 |
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Dropout voltage |
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vs Input voltage |
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vs Output current, TA = 25°C |
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22 |
Equivalent series resistance (ESR) |
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vs Output current, TJ = 125°C |
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vs Output Current, TA = 25°C |
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vs Output current, TJ = 125°C |
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25 |
Years Estimated Life
18
16
14
12
10
8
6
4
2
0
80 |
90 |
100 |
110 |
120 |
130 |
140 |
150 |
Continuous TJ (5C)
Figure 2. TPS767D301MPWPREP Estimated Device Life at
Elevated Temperatures Wirebond Voiding Fail Mode
Copyright © 2006–2010, Texas Instruments Incorporated |
Submit Documentation Feedback |
7 |
Product Folder Link(s): TPS767D301-EP
TPS767D301-EP
SGLS327A –FEBRUARY 2006–REVISED APRIL 2010 |
www.ti.com |
TYPICAL CHARACTERISTICS (continued)
OUTPUT VOLTAGE vs
OUTPUT CURRENT
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3.2835 |
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VO = 3.3 V |
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3.2830 |
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VI = 4.3 V |
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° |
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TA = 25 C |
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− V |
3.2825 |
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V oltage |
3.2820 |
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− Output |
3.2815 |
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O3.2810 |
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V |
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3.2805 |
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3.2800 |
0.1 |
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0 |
0.2 |
0.4 |
0.5 |
0.6 |
0.7 |
0.8 |
0.9 |
1 |
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IO − Output Current − A |
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Figure 3.
OUTPUT VOLTAGE |
OUTPUT VOLTAGE |
vs |
vs |
OUTPUT CURRENT |
OUTPUT CURRENT |
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1.7965 |
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VO = 1.8 V |
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2.4960 |
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VI = 2.8V |
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2.4955 |
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TA = 25°C |
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1.7960 |
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2.4950 |
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− V |
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V |
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− Output V oltage |
1.7955 |
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Output V oltage − |
2.4945 |
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2.4940 |
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1.7950 |
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2.4935 |
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O |
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− |
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O |
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1.7945 |
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V |
2.4930 |
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2.4925 |
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1.7940 |
0.1 |
0.2 |
0.3 |
0.4 |
0.5 |
0.6 |
0.7 |
0.8 |
0.9 |
1 |
2.4920 |
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0 |
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IO − Output Current − A |
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VO = 2.5 V |
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VI = 3.5 V |
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TA = 25°C |
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0 |
0.1 |
0.2 |
0.3 |
0.4 |
0.5 |
0.6 |
0.7 |
0.8 |
0.9 |
1 |
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IO − Output Current − A |
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Figure 4. |
Figure 5. |
OUTPUT VOLTAGE |
OUTPUT VOLTAGE |
OUTPUT VOLTAGE |
vs |
vs |
vs |
FREE-AIR TEMPERATURE |
FREE-AIR TEMPERATURE |
FREE-AIR TEMPERATURE |
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3.32 |
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1.815 |
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2.515 |
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VO = 3.3 V |
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VO = 1.8 V |
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VO = 2.5 V |
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3.31 |
VI = 4.3 V |
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1.810 |
VI = 2.8 V |
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2.510 |
VI = 3.5 V |
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− V |
3.30 |
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− V |
1.805 |
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− V |
2.505 |
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V oltage |
3.29 |
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V oltage |
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IO = 1 A |
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V oltage |
2.500 |
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IO = 1 A |
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IO = 1 A |
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1.800 |
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− Output |
3.28 |
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IO = 1 mA |
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− Output |
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IO = 1 mA |
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−Output |
2.495 |
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1.795 |
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IO = 1 mA |
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O |
3.27 |
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O |
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O |
2.490 |
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V |
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V |
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V |
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3.26 |
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1.790 |
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2.485 |
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3.25 |
−40 |
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0 |
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1.785 |
−40 |
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0 |
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2.480 |
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−60 |
−20 |
20 |
40 |
60 |
80 |
100 |
120 |
140 |
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−60 |
−20 |
20 |
40 |
60 |
80 |
100 |
120 |
140 |
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−60 |
−40 |
−20 |
0 |
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60 |
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100 |
120 |
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T |
− Free-Air T emperature − °C |
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T |
− Free-Air T emperature − °C |
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TA − Free-Air T emperature − |
° |
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A |
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A |
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C |
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Figure 6. |
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Figure 7. |
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Figure 8. |
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8 |
Submit Documentation Feedback |
Copyright © 2006–2010, Texas Instruments Incorporated |
Product Folder Link(s): TPS767D301-EP
TPS767D301-EP
www.ti.com |
SGLS327A –FEBRUARY 2006 –REVISED APRIL 2010 |
TYPICAL CHARACTERISTICS (continued) (continued)
GROUND CURRENT |
GROUND CURRENT |
vs |
vs |
FREE-AIR TEMPERATURE |
FREE-AIR TEMPERATURE |
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92 |
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96 |
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90 |
VO = 3.3 V |
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94 |
VO = 1.8 V |
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VI = 4.3 V |
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VI = 2.8 V |
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88 |
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92 |
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IO = 1 mA |
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µA |
86 |
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µA |
90 |
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88 |
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− |
84 |
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− |
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Current |
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Current |
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82 |
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86 |
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IO = 500 mA |
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IO = 1 mA |
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84 |
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Ground |
80 |
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Ground |
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IO = 1 A |
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82 |
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78 |
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IO = 500 mA |
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80 |
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76 |
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78 |
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74 |
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76 |
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IO = 1 A |
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72 |
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74 |
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−60 |
−40 |
−20 |
0 |
20 |
40 |
60 |
80 |
100 |
120 |
140 |
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−60 |
−40 |
−20 |
0 |
20 |
40 |
60 |
80 |
100 |
120 |
140 |
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T |
− Free-Air T emperature − °C |
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TA − Free-Air T emperature − |
° |
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A |
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C |
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Figure 9. |
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Figure 10. |
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OUTPUT SPECTRAL NOISE
DENSITY
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vs |
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FREQUENCY |
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10−5 |
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VI = 4.3 V |
Hz |
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CO = 10 F |
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V/ |
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TA = 25°C |
− |
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Noise Density |
10−6 |
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IO = 7 mA |
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IO = 1 A |
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Spectral |
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10−7 |
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− Output |
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n |
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V |
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10−8 |
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102 |
103 |
104 |
105 |
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f − Frequency − Hz |
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OUTPUT IMPEDANCE |
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vs |
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FREQUENCY |
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0 |
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VI = 4.3 V |
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CO = 10 F |
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TA = 25°C |
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Ω |
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IO = 1 mA |
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− |
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− Output Impedance |
10−1 |
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o |
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Z |
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IO = 1 A |
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10−2 |
102 |
103 |
104 |
105 |
106 |
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101 |
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f − Frequency − kHz |
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Figure 12. |
Figure 13. |
LINE TRANSIENT RESPONSE
− V |
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− Input V oltage |
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3.8 |
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2.8 |
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I |
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VO = 1.8 V |
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V |
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IL = 10 mA |
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CL = 10 F |
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mV |
20 |
TA = 25°C |
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in |
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−Change |
Voltage − |
0 |
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−20 |
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O |
Output |
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V |
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0 |
20 |
40 |
60 |
80 |
100 |
120 |
140 |
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200 |
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t − T ime − s |
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Figure 15.
LOAD TRANSIENT RESPONSE
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100 |
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VO = 1.8 V |
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mV |
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in |
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50 |
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VI = 2.8 V |
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CL = 100 |
F |
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− Change |
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Voltage − |
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0 |
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TA = 25°C |
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O |
Output |
−50 |
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V |
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−100 |
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A |
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− |
1 |
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Current |
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0.5 |
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− Output |
0 |
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O |
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I |
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0 |
20 |
40 |
60 |
80 |
100 |
120 |
140 |
160 |
180 |
200 |
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t − T ime − s |
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Figure 16.
POWER-SUPPLY RIPPLE
REJECTION
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vs |
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FREQUENCY |
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90 |
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dB |
80 |
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VO = 3.3 V |
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VI = 4.3 V |
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− |
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CO = 10 F |
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Rejection |
70 |
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IO = 1 A |
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60 |
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TA = 25°C |
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Ripple |
50 |
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40 |
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Supply |
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30 |
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− Power |
20 |
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10 |
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PSRR |
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0 |
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−10 |
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10 |
100 |
1k |
10k |
100k |
1M |
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f − Frequency − Hz |
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Figure 11.
DROPOUT VOLTAGE vs
FREE-AIR TEMPERATURE
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103 |
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IO = 1 A |
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102 |
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− mV |
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V oltage |
101 |
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− Dropout |
100 |
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IO = 10 mA |
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DO |
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V |
10−1 |
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VO = 3.3 V |
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IO = 0 |
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CO = 10 F |
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Figure 14.
LINE TRANSIENT RESPONSE
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VO = 3.3 V |
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V oltage |
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CL = 10 F |
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TA = 25°C |
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5.3 |
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4.3 |
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− Change |
Voltage − |
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Figure 17.
Copyright © 2006–2010, Texas Instruments Incorporated |
Submit Documentation Feedback |
9 |
Product Folder Link(s): TPS767D301-EP
TPS767D301-EP
SGLS327A –FEBRUARY 2006–REVISED APRIL 2010 www.ti.com
TYPICAL CHARACTERISTICS (continued) (continued)
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OUTPUT VOLTAGE |
DROPOUT VOLTAGE |
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vs |
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LOAD TRANSIENT RESPONSE |
TIME (AT STARTUP) |
INPUT VOTAGE |
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OutputV oltage − V |
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50 |
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TA = 25°C |
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OutputCurrent |
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t − T ime − s |
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− mV |
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oltage |
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− Dropout |
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t − T ime − μs |
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IO = 1A |
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TA = 25°C |
TA = 125°C |
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TA = −40 °C |
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2.5 |
3 |
3.5 |
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4.5 |
5 |
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VI − Input V oltage − V |
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Figure 18. |
Figure 19. |
Figure 20. |
VI |
IN |
To Load |
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OUT |
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+ |
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EN |
CO |
RL |
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GND |
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ESR |
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Figure 21. Test Circuit for Typical Regions of Stability (Figure 22 Through Figure 25) (Fixed-Output Options)
10 |
Submit Documentation Feedback |
Copyright © 2006–2010, Texas Instruments Incorporated |
Product Folder Link(s): TPS767D301-EP
TPS767D301-EP
www.ti.com |
SGLS327A –FEBRUARY 2006 –REVISED APRIL 2010 |
TYPICAL CHARACTERISTICS (continued)(1)
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TYPICAL REGION OF STABILITY |
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EQUIVALENT SERIES RESISTANCE (ESR) |
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vs |
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OUTPUT CURRENT |
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Ω |
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Resistance |
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Resistance |
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Series |
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VO = 3.3 |
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VI = 4.3 |
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Co = 4.7 |
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Equivalent−ESR |
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TA = 25°C |
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Figure 22. |
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TYPICAL REGION OF STABILITY |
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EQUIVALENT SERIES RESISTANCE (ESR) |
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vs |
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OUTPUT CURRENT |
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Ω |
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Ω |
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ResistanceSeriesEquivalent−ESR |
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ResistanceSeriesEquivalent−ESR − |
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VO = 3.3 |
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Co = 22 |
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VI = 4.3 |
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0.1 |
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TA = 25°C |
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IO − Output Current − mA
Figure 24.
TYPICAL REGION OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs
OUTPUT CURRENT
10
Region of Instability
1
VO = 3.3 V
Co = 4.7 F Region of Stability
VI = 4.3 V
TJ = 125°C
0.1
Region of Instability
0.01
0 |
200 |
400 |
600 |
800 |
1000 |
IO − Output Current − mA
Figure 23.
TYPICAL REGION OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs
OUTPUT CURRENT
10
Region of Instability
1
VO = 3.3 V
Co = 22 F Region of Stability
VI = 4.3 V
TJ = 125°C
0.1
Region of Instability
0.01
0 |
200 |
400 |
600 |
800 |
1000 |
IO − Output Current − mA
Figure 25.
(1)Equivalent series resistance (ESR) refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance to CO.
Copyright © 2006–2010, Texas Instruments Incorporated |
Submit Documentation Feedback |
11 |
Product Folder Link(s): TPS767D301-EP
