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| LP3907 Datasheet, PDF (21/42 Pages) National Semiconductor (TI) – Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C Compatible Interface | |||
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LP3907 Default Power-Off Sequence
30017811
Symbol
Description
Min
Typ
Max
Units
t1
Programmable Delay from EN_T deassertion to VCC_Buck1 Off
1.5
ms
t2
Programmable Delay from EN_T deassertion to VCC_Buck2 Off
2
ms
t3
Programmable Delay from EN_T deassertion to VCC_LDO1 Off
3
ms
t4
Programmable Delay from EN_T deassertion to VCC_LDO2 Off
6
ms
Note: The LP3907 default Power on delays can be reprogrammed at final test to 0, .5, 1, 2, 5, or 10ms. Default setting is the same as the on sequence.
21
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