RT5028C Datasheet, PDF (14/40 Pages) Richtek Technology Corporation – PMIC for Industrial Application

RT5028C
PMIC
Power Channels Control Methodology
When VIN power Good or PWRON event occurs, the PMIC
will follow the power on sequence to turn on channels.
During normal operation, users can use the REBOOT pin
to restart PMIC again. Another PWROFF event, OTP or
UVP occurs, PMIC will execute the power off. In the
RT5028C PMIC, the UVP event will be set out when the
Buck1 to Buck4s' output voltage is lower than 1/2 x (V_OUT).
Power Off
Edge
trigger
No
PWRON
Check
Edge
trigger
No
VIN Power
Good
Yes
Yes
1
(Internal I²C)
Mask_GPIO
0
(External Enable Control)
Yes
REBOOT
Check
No
Power On
Sequence
No
External EN
Check
Yes
Normal Operation
Yes
REBOOT
Check
No
OTP Check
Yes
No
UVP Check
Yes
PWROFF ^No
Check
Yes
Power Off
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is a registered trademark of Richtek Technology Corporation.
DS5028C-00 March 2015