RT5035A/B
Protection
Type
Threshold
(Typical Value)
Delay
Time
Protection Method
Reset Method
VDDM power reset or
EN = low
OCP
OVP
NMOS current > 0.8A
100ms
Turn Off whole IC
CH7
CH8
LX7 > A4.OVP7
threshold
VDDM power reset or
EN = low
No delay
Turn Off CH7 only
Turn off whole IC,
VDDM power reset or
EN = low
UVP
VOUT8 < target x 0.5 No delay except CH9 and CH1
in PFM (only for 2AA)
Current Limit PMOS current > 300mA No delay Limit PMOS current
Reset by load
Reset by load
Current limit PMOS current > 100mA No delay Limit PMOS current
Turn off whole IC,
Restart whole IC if EN =
High and VDDM > 2.4V
CH9
VDDM UVLO
VDDM < 2.2V
No delay except CH9 and CH1
in PFM
Restart whole IC if EN =
High and VDDM > 2.4V
VDDM < 2.2V
No delay
goes low
RESET
RESET
Turn off whole IC,
100ms except CH9 and CH1
in PFM (only for 2AA)
VDDM power reset or
EN = low
OCP
PMOS current > 1.5A
VOUT10 < 0.8V
Turn off whole IC,
No delay except CH9 and CH1
in PFM (only for 2AA)
VDDM power reset or
EN = low
CH10
VOUT10 UVP
Turn off whole IC,
VOUT10 < target 0.2V 100ms except CH9 and CH1
Over-Load
Protection
VDDM power reset or
EN = low
in PFM
RTCPWR
UVLO
UVP
RTCPWR < 1.9V
No delay Clear RTC registers
RTCPWR > 2.2V
Turn off whole IC,
No delay except CH9 and CH1
in PFM (only for 2AA)
SWO < SWI 0.9V
Or SWO < 0.9V
VDDM power reset or
EN = L
SW4
Load
Switch
Limit N-MOSFET
Current Limit NMOS current > 900mA No delay
Reset by load
current
Turn off whole IC,
Temperature > 160C No delay except CH9 and CH1
Restart whole IC if
EN = High and
Temperature < 140C
Thermal
Shutdown
Thermal
in PFM (only for 2AA)
Copyright © 2020 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5035A/B-03 February 2020
www.richtek.com
43
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
