PM6685TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

PM6685TR

Dual step-down main supply controller with auxilary voltages for notebook system power

STMicroelectronics 

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PM6685

Device description

When EN5 and EN3 pins are forced high the switching sections begin their soft start

sequence.

LDO3 management is independent from the general power up sequence and depends only

on LDO3_SEL .

Table 9. Operatives modes

Mode

Conditions

Description

Run

Stand

Shutdown

SHDN is high EN3/EN5

pins are high

Switching regulators are enabled; internal linear

regulators outputs are enabled.

by Both EN5/EN3 pins are

low and SHDN pin is high

Internal Linear regulators active (LDO5 is always on

while LDO3 depends on LDO3_SEL pin). In Standby

mode LGATE5/LGATE3 pins are forced high while

HGATE5/HGATE3 pins are forced low.

SHDN is low

All circuits off.

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