LM3556_15 Datasheet, PDF (9/39 Pages) Texas Instruments – Synchronous Boost LED Flash Driver With High-Side Current Source

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Typical Characteristics (continued)
3.52
3.50
3.48
25°C
- 40°C
3.46
85°C
3.44
3.42
3.40
3.38
3.36
3.34
2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2
VIN (V)
Current Limit = 3.1 A
LM3556
SNVS796D – AUGUST 2011 – REVISED OCTOBER 2015
VIN
VOUT
IIN
ILED
Current Limit = 1.7 A
1 ms/DIV
1V/DIV
2V/DIV
1A/DIV
1A/DIV
Figure 14. Input Current Limit Over Temperature and V_IN
Figure 15. Start-Up Plot With Part In Boost Mode Current
Limit
STROBE
VOUT
ILED
IIN
400 ms
100ms/DIV
2V/DIV
2V/DIV
500mA/
DIV
1A/DIV
Figure 16. Strobe With Edge-Triggered Signal
VOUT
100 mV/
DIV
200 mA/
IIN
DIV
ILED
40 ms/DIV
200 mA/
DIV
STROBE
ILED
VOUT
IIN
400 ms
100 ms/DIV
2V/DIV
500 mA/
DIV
2V/DIV
1A/DIV
Figure 17. Strobe With Level-Triggered Signal
VIN
ILED
IIN
200 mV/
DIV
1A/DIV
1A/DIV
400 s/DIV
Figure 18. Internal Indicator Operation
Figure 19. Input Voltage Flash Monitor Report Mode With
Default Settings
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