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PM6685 Datasheet(PDF) 31 Page - STMicroelectronics

Part # PM6685
Description  Dual step-down main supply controller with auxilary voltages for notebook system power
PDF  52 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6685 Datasheet(HTML) 31 Page - STMicroelectronics

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PM6685
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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
SHDN is high EN3/EN5
pins are high
Switching regulators are enabled; internal linear
regulators outputs are enabled.
Stand
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.
Shutdown
SHDN is low
All circuits off.



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