RT5021
Function Block Diagram
BAT
SYS
VIN
SYS
VDDI
VP
+
-
3.3V
Li+ Battery
Linear Charge
with APPM
CHG_TYP [2 : 0]
CHG_1DET
CHG_2DET
CHGRUN
Battery
Charger Type
Detector
DP
DN
CHG2
VP Buffer with
NTC Type Detector
+
ENCH
USUS
VSETH
VSETC
ISETH
ISETC
ISETL
ISETU
JEITA
TIMER [3 : 0]
Mask_DPM
TS
-
TS Comparators
CHG
PVD1
SYS
LX1
PVD1
Body
Diode
Control
SYS
PGOOD
SAFE
DPM
TS_MESTER [2 : 0]
SYS
PVD1
THR
ECO
VDDI
SYS
CH9 RTC LDO
with Body Diode
Control
POR
BAT
VIN
Power Plug-In
Wake up Detector
VRTC
CH1 C-Mode
Step-Up
for 1A
-
+
V
REF
+ DVS
PVD2
SYS
CH2 LV C-Mode
Sync.
Step-Up/Down
For 1A
Register File
Output Voltage of
CH1 to CH6, CH8
CH7 Dimming
Ratio and OVP
Threshold Enable
of CH5, CH6,
CH7, CH8
PDM/PWM setting
of CH1, CH2,
CH3, CH4
Charger Type
Setting/Status
WAKE
SYS
CH8 Low
VIN LDO
PVD8
VO8
-
+
V
REF
+ DAC
LX2A
LX2B
VO2
FB2
V
REF
+ DVS
PVD3
LX3
CH3 C-Mode
Step-Down
for 1.3A
-
+
SYS
PVD45
LX4
CH4 C-Mode
Step-Down
for 1.3A
-
+
SYS
POR
Enable Control
Sequence Detection
& Control
SYS
EN
SEQ
I
2
C Control Interface
(Fast Mode up to 400kb/s)
SYS
THR
ECO
PGOOD
SAFE
TS_METER [2 :0 ]
No_BAT
DPM
CHGRUN
SYS
CH7 HV C-Mode
Sync. Step-Up +
Current Source +
Mode Selector
for 1 to 6WLED
-
+
SYS
V
REF
+ DAC
Body
Diode
Control
SYS
SCL
SDA
FB3
V
REF
+ DVS
INT
Interrupt
Handler
FB4
V
REF
+ DVS
-
+
PVD7
SYS
PVD45
LX5
VO5/FB5
CH5
C-Mode
Step-Down
for 0.6A
LX7
FB7
V
REF
+ DVS
-
+
CH6 Low
VIN LDO
PVD6
VO6
GND
-
+
V
REF
+ DAC
Copyright
©
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
6
DS5021-01 April 2013
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
