RT4801H
Marking Information
Pin Configurations
49 : Product Code
(TOP VIEW)
W : Date Code
49W
A1
B1
C1
D1
A2
A3
B3
C3
D3
ENN
ENP
CF2
VON
B2
PGND
CF1
SCL
C2
VIN
SDA
D2
LXP
BST
GND
E1
E2
E3
PGND
VOP
BST
WL-CSP-15B 1.31x2.07 (BSC)
Functional Pin Description
Pin No.
Pin Name
Pin Function
A1
ENN
Enable Control Input for VON.
A2
VON
Negative Terminal Output.
Negative Charge Pump Flying Capacitor Pin.
Enable Control Input for VOP.
Clock of I2C.
A3
CF2
B1
ENP
B2
B3, E1
C1
SCL
PGND
VIN
Power Ground.
Power Input.
C2
SDA
CF1
LXP
Data of I2C.
C3
Negative Charge Pump Flying Capacitor Pin.
Switching Node of Boost Converter.
D1
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
D2
GND
D3, E2
E3
BST
VOP
Output Voltage of Boost Converter.
Positive Terminal Output.
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is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS4801H-00 May 2016
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
