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RT5035B Datasheet(PDF) 43 Page - Richtek Technology Corporation

Part # RT5035B
Description   Channel DC-DC Converters
PDF  44 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT5035B Datasheet(HTML) 43 Page - Richtek Technology Corporation

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RT5035A/B
Copyright © 2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5035A/B-02
February
2017
www.richtek.com
43
Protection
Type
Threshold
(Typical Value)
Delay
Time
Protection Method
Reset Method
CH7
OCP
NMOS current > 0.8A
100ms
Turn Off whole IC
VDDM power reset or
EN = low
OVP
LX7 > A4.OVP7
threshold
No delay
Turn Off CH7 only
VDDM power reset or
EN = low
CH8
UVP
VOUT8 < target x 0.5
No delay
Turn off whole IC,
except CH9 and CH1
in PFM (only for 2AA)
VDDM power reset or
EN = low
Current Limit
PMOS current > 300mA No delay
Limit PMOS current
Reset by load
CH9
Current limit
PMOS current > 100mA No delay
Limit PMOS current
Reset by load
VDDM UVLO
VDDM < 2.2V
No delay
Turn off whole IC,
except CH9 and CH1
in PFM
Restart whole IC if EN =
High and VDDM > 2.4V
RESET
VDDM < 2.2V
No delay
RESET goes low
Restart whole IC if EN =
High and VDDM > 2.4V
CH10
OCP
PMOS current > 1.5A
100ms
Turn off whole IC,
except CH9 and CH1
in PFM (only for 2AA)
VDDM power reset or
EN = low
VOUT10 UVP
VOUT10 < 0.8V
No delay
Turn off whole IC,
except CH9 and CH1
in PFM (only for 2AA)
VDDM power reset or
EN = low
Over-Load
Protection
VOUT10 < target
 0.2V 100ms
Turn off whole IC,
except CH9 and CH1
in PFM
VDDM power reset or
EN = low
RTCPWR
UVLO
RTCPWR < 1.9V
No delay
Clear RTC registers
RTCPWR > 2.2V
SW4
Load
Switch
UVP
SWO < SWI
 0.9V
Or SWO < 0.9V
No delay
Turn off whole IC,
except CH9 and CH1
in PFM (only for 2AA)
VDDM power reset or
EN = L
Current Limit
NMOS current > 900mA No delay
Limit N-MOSFET
current
Reset by load
Thermal
Thermal
Shutdown
Temperature > 160
C
No delay
Turn off whole IC,
except CH9 and CH1
in PFM (only for 2AA)
Restart whole IC if
EN = High and
Temperature < 140
C



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