RT5035A/B
Functional Block Diagram
BAT
VOUT1
Body
Diode
Control
PVDD5
VDDM
BAT UVLO
2.6V/2.4V (Part A)
or 1.7V/1.5 (Part B)
VDDM VOUT1
CH1
PFM Async.
or
C-Mode Sync.
LV Step-Up
-
+
V
REF
&
DAC
PVDD6
-
+
Floating GND
Selection
VNEG
CH6
Generic LDO
CH2
LV C-Mode
Sync.
Step-Up/Down
A9.Bit0
VDDM
V
REF
& DAC
(W / DVS)
PVDD2
LX2A
VOUT2
BAT
LX1
LX5
CH5
LV C-Mode
Sync.
Step-Down
VOUT1
VOUT5/FB5
VOUT6
-
+
V
REF
& DAC
LX7
VDDM
CH7 (WLED)
HV C-Mode
Async. Step-Up
For 2 to 6WLED
V
REF
& DAC
FB7
PVDD8
CH8
Generic LDO
VOUT8
+
-
LX2B
VNEG
-
+
VDDM
PVDD3
V
REF
& DAC
CH3
LV C-Mode
Sync.
Step-Down
LX3
VOUT3/FB3
VNEG
V
REF
& DAC
(W / DVS)
PVDD4/10
CH10
PFM or
LV C-Mode
Sync.
Step-Down
-
+
VDDM
-
+
V
REF
& DAC
(W / DVS)
VDDM
PVDD4/10
LX10
Reg.PFM10
CH4
LV C-Mode
Sync.
Step-Down
LX4
VOUT10/FB10
VOUT4/SWI
-
+
V
REF
& DAC
(W / DVS)
SCL
SDA
BAT
VNEG
VNEG
-
+
VDDM
I
2
C Control Interface
(Fast Mode up to 400kb/s)
VOUT1
V
REF
& DAC
(W / DVS)
VDDM
SW4 Control
SWO
Charge
Pump for SW
Chip Enable
Sequence
Selection
EN
VM
Body
Diode
Control
VDDM
RESET
2.4V/2.2V
Max (BAT, VOUT1)
VOUT1
CH9 LDO
Keep Alive
3.1V
Always On
Register File
Output Voltage,
Power On/Off
Sequence Control,
Delay time,
WLED dim. Ratio,
CH7 OVP
Threshold
32bits Memory
SEQ
RESET
Reverse Leakage
Control
PLL
VDDM
BAT
SYNC
RTCPWR
XIN
XOUT
RTCGND
VDDM
C32K
GND
RTC + OSC+
Reset@1.9V
Base Controller
POR/OSC/UVP/
OVP/OCP/OTP
VNEG
Charge Pump
VNEG = BAT-4.5V
CP
CN
VNEG
Copyright © 2020 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5035A/B-03
February 2020
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
