RT9986 RICHTEK [Richtek Technology Corporation], RT9986 Datasheet - Page 7

• Manufacturer Part Number: RT9986
• Description: 7-CH DC/DC Converter for DSC
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Function Block Diagram
DS9986-00 May 2011
EN1234
PVDD5
VOUT6
PVDD7
VNEG
VCHK
SYSR
VREF
EN56
GND
RST
EN7
FB5
FB6
FB7
LX5
LX6
LX7
BAT
BAT
1.25V
1.8V
REF
REF
Control
Diode
Control
Body
Diode
Body
+
-
Sequence Control
Power On/Off
Current Source
PWM Dimming
Mode Selector
Logic Block
C-Mode
Step-Up
CH7 C-Mode
Step-Up or
PWM
RTCPWR
SYS_Reset
CH5
0.6V
REF
Detector
30mA(max.)
Voltage
VDDM
BAT
VDDM
VDDM
+
+
0.25V
REF
+
-
Inverting
VDDM
UVLO
CH6
FB2
Soft-Start
VDDM
UVLO
Step-Down
Step-Up or
Step-Up
C-Mode
C-Mode
VDDM
VDDM
Step-Down
VDDI
Step-Down
CH1
CH2
C-Mode
W/ Body Diode
C-Mode
VDDM
VDDM
CH4
CH3
RTC_LDO
Control
VDDI
BAT
+
-
+
-
-
+
+
-
0.8V
0.8V
REF
REF
Control
0.8V
REF
Control
Diode
Diode
Body
Body
0.8V
REF
BAT
BAT
PVDD1
LX1
FB1
PVDD2
LX2
FB2
PVDD3
LX3
FB3
PVDD4
LX4
FB4
RTCPWR
RT9986
www.richtek.com
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