RT9953 RICHTEK [Richtek Technology Corporation], RT9953 Datasheet - Page 6

• Manufacturer Part Number: RT9953
• Description: 4+1 CH Power Management IC
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9953
Function Block Diagram
www.richtek.com
6
PVDD2
PVDD4
EN1
EN2
EN3
EN4
EN5
SEL
LX2
FB2
LX4
FB4
0.8V
REF
0.8V
REF
-
+
Enable Mode
+
-
Sequence
Step-Down
Step-Up or
Step-Down
C-Mode
C-Mode
CH2
CH4
VDDM
Step-Down
Step-Up
C-Mode
C-Mode
VDDM
LDO
CH1
CH5
CH3
-
+
-
+
+
-
0.8V
REF
0.8V
REF
0.8V
REF
PVDD1
LX1
FB1
PVDD3
LX3
FB3
PVDD5
SS
VOUT5
FB5
GND
DS9953-02 April 2011