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DS5028E Datasheet, PDF (16/41 Pages) Richtek Technology Corporation – Integrated PMIC with 4-Channel Synchronous Buck Converters, 8 LDOs, and MTP Non-Volatile Memory for Industrial Applications
RT5028E
When AP sends the “PWRHOLD” signal during THOLD time, the RT5028E will keep power-on.
START_TIME
PWRON
BUCK1
……
BUCK4
LDO1
……
LDO8
RESET_DLY
RESET
PWRHOLD
THOLD
Low to High signal from AP.
Timing Based ON/OFF Sequence
START_TIME
Normal power on
PWRON
SHDN_PRESS
BUCK1
BUCK2
……
BUCK4
LDO1
……
LDO8
TSS
TSS
...
RESET_DLY
Normal power off
TSS
TSS
RESET
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DS5028E-00 October 2016