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TPS61097 |
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www.ti.com |
SLVS872A–JUNE 2009–REVISED JULY 2009 |
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TYPICAL CHARACTERISTICS |
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Table 2. Table of Graphs |
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FIGURE |
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Maximum Output Current |
vs Input Voltage |
1 |
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Efficiency |
vs Output Current |
2 |
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vs Input Voltage |
3 |
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Input Current |
vs Input Voltage (Device Enabled, No Output Load, VOUT = 3.3 V) |
4 |
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vs Input Voltage (Device Disabled, No Output Load) |
5 |
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Startup Voltage |
vs Temperature |
6 |
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vs Output Current |
7 |
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Output Voltage |
vs Output Current |
8 |
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vs Input Voltage |
9 |
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Output Voltage Ripple |
10 |
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Load Transient Response |
11 |
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Line Transient Response |
12 |
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Waveforms |
Switching Waveform, Continuous Mode |
13 |
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Switching Waveform, Discontinuous Mode |
14 |
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Startup After Enable (VIN = 1.2 V, IOUT = 10 mA) |
15 |
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Startup After Enable (VIN = 1.8 V, IOUT = 10 mA) |
16 |
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MAXIMUM OUTPUT CURRENT vs
INPUT VOLTAGE
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0.25 |
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100 |
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COUT = 10 µF, ceramic |
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90 |
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L = 10 µH |
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A |
0.20 |
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80 |
Maximum Output Current |
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70 |
0.15 |
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Efficiency % |
60 |
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50 |
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0.10 |
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40 |
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30 |
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O(max) |
0.05 |
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20 |
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I |
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10 |
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0.00 |
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0 |
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0.9 |
1.2 |
1.5 |
1.8 |
2.1 |
2.4 |
2.7 |
3 |
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VI Input Voltage V |
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EFFICIENCY |
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vs |
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OUTPUT CURRENT |
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VIN = 3 V |
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VIN = 2.5 V |
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VIN = 1.8 V |
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VIN = 1.5 V |
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VIN = 1.2 V |
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COUT = 10 µF, ceramic |
VIN = 0.9 V |
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L = 10 µH |
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0.1 |
1 |
10 |
100 |
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IO Output Current mA |
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Figure 1. |
Figure 2. |
Copyright © 2009, Texas Instruments Incorporated |
Submit Documentation Feedback |
9 |
TPS61097 |
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SLVS872A–JUNE 2009–REVISED JULY 2009 |
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www.ti.com |
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EFFICIENCY |
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INPUT CURRENT |
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vs |
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vs |
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INPUT VOLTAGE |
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INPUT VOLTAGE |
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100 |
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20 |
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IOUT = 10 mA |
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Device Enabled |
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90 |
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18 |
No Output Load |
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80 |
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16 |
VOUT = 3.3 V |
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70 |
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µA |
14 |
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IOUT = 100 µA |
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Efficiency% |
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CurrentInput |
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60 |
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12 |
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IOUT = 5 mA |
IOUT = 100 mA |
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50 |
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10 |
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IOUT = 50 mA |
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40 |
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8 |
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30 |
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IN |
6 |
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I |
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20 |
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4 |
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10 |
COUT = 10 µF, ceramic |
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L = 10 µH |
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2 |
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0 |
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0 |
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0.9 |
1.2 |
1.5 |
1.8 |
2.1 |
2.4 |
2.7 |
3.0 |
0.9 |
1.2 |
1.5 |
1.8 |
2.1 |
2.4 |
2.7 |
3 |
3.3 |
3.6 |
3.9 |
4.2 |
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VIN Input Voltage V |
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VIN Input Voltage V |
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Figure 3. |
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Figure 4. |
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INPUT CURRENT |
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STARTUP VOLTAGE |
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vs |
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vs |
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INPUT VOLTAGE |
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TEMPERATURE |
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120 |
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0.720 |
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VIN = 1.8 V |
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Device Disabled |
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No Output Load |
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No Load |
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100 |
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0.718 |
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nA |
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0.716 |
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80 |
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V |
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Current |
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Voltage |
0.714 |
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60 |
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Input |
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Startup |
0.712 |
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40 |
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IN |
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I |
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0.710 |
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20 |
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0.708 |
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0 |
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0.706 |
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0.9 |
1.2 |
1.5 |
1.8 |
2.1 |
2.4 |
2.7 |
3 |
3.3 |
3.6 |
3.9 |
4.2 |
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-40 |
-25 |
-10 |
5 |
20 |
35 |
50 |
65 |
80 |
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VIN Input Voltage V |
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TA Temperature °C |
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Figure 5. |
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Figure 6. |
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10 |
Submit Documentation Feedback |
Copyright © 2009, Texas Instruments Incorporated |
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TPS61097 |
www.ti.com |
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SLVS872A–JUNE 2009–REVISED JULY 2009 |
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STARTUP VOLTAGE |
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OUTPUT VOLTAGE |
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vs |
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vs |
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OUTPUT CURRENT |
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OUTPUT CURRENT |
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0.725 |
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3.32 |
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VIN = 1.8 V |
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COUT = 10 µF, ceramic |
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L = 10 µH |
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VIN = 2.1 V |
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0.720 |
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3.30 |
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VIN = 2.5 V |
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V |
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VIN |
= 2.7 V |
VoltageV |
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3.28 |
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VIN = 3.0 V |
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VoltageOutput |
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0.715 |
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VIN |
= 0.9 V |
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VIN |
= 1.2 V |
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3.26 |
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VIN |
= 1.5 V |
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Startup |
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OUT |
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0.710 |
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VIN = 1.8 V |
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3.24 |
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V |
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0.705 |
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3.22 |
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0.700 |
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3.20 |
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0 |
1 |
10 |
100 |
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1 |
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10 |
100 |
1000 |
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IOUT Output Current mA |
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IOUT Output Current mA |
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Figure 7. |
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Figure 8. |
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OUTPUT VOLTAGE |
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vs |
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INPUT VOLTAGE |
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6 |
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Device disabled |
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5 |
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V |
4 |
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Voltage |
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RLOAD = 1k |
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Ouput |
3 |
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RLOAD |
= 122 |
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OUT |
2 |
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V |
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1 |
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0 |
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0 |
1 |
2 |
3 |
4 |
5 |
6 |
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VIN Input Voltage V |
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Figure 9.
Copyright © 2009, Texas Instruments Incorporated |
Submit Documentation Feedback |
11 |
TPS61097
SLVS872A–JUNE 2009–REVISED JULY 2009 |
www.ti.com |
OUTPUT VOLTAGE RIPPLE
Inductor Current
VIN = 1.8 V
IOUT = 50 mA
COUT = 10 µF, ceramic
L = 10 µH
VOUT
Figure 10.
LOAD TRANSIENT RESPONSE
IOUT
VIN = 1.2 V
IOUT = 6 mA to 50 mA
VOUT
Figure 11.
12 |
Submit Documentation Feedback |
Copyright © 2009, Texas Instruments Incorporated |
TPS61097
www.ti.com |
SLVS872A–JUNE 2009–REVISED JULY 2009 |
LINE TRANSIENT RESPONSE
VIN
Offset 1.8 V
VIN = 1.8 V to 2.4 V
RLOAD = 100 Ω
VOUT
Figure 12.
SWITCHING WAVEFORM, CONTINUOUS MODE
VIN = 1.8 V
IOUT = 50 mA
Inductor Current
Inductor Voltage
VOUT
Figure 13.
Copyright © 2009, Texas Instruments Incorporated |
Submit Documentation Feedback |
13 |
TPS61097
SLVS872A–JUNE 2009–REVISED JULY 2009 |
www.ti.com |
SWITCHING WAVEFORM, DISCONTINUOUS MODE
VIN = 1.8 V
IOUT = 10 mA
Inductor Current
Inductor Voltage
VOUT
Figure 14.
STARTUP AFTER ENABLE
VIN = 1.2 V
IOUT = 10 mA
VOUT
VEN
Figure 15.
14 |
Submit Documentation Feedback |
Copyright © 2009, Texas Instruments Incorporated |
TPS61097
www.ti.com |
SLVS872A–JUNE 2009–REVISED JULY 2009 |
STARTUP AFTER ENABLE
VIN = 1.8 V
IOUT = 10 mA
VOUT
VEN
Figure 16.
Copyright © 2009, Texas Instruments Incorporated |
Submit Documentation Feedback |
15 |