RT9428WSC datasheet(2/14 Pages) RICHTEK

2 / 14 page

RT9428

DS9428-01

October 2014

www.richtek.com

is a registered trademark of Richtek Technology Corporation.

Function Pin Description

Pin No.

Pin Name

Pin Function

TEST

Test Pin. Connect to GND pin during normal operation.

VBAT

Battery Voltage Measurement Input.

VDD

Processor Power Input. Decouple with a 10nF capacitor.

GND

Ground.

SDA

Serial Data Input. Slave I2C data line for communication with system. Open-drain

I/O.

SCL

Serial Clock Input. Slave I2C clock line for communication with system.

Quick Sensing Input. Active high to restart the calculation. Pull low to GND during

normal operation.

ALERT

Alert Output. When SOCLow condition is detected, It outputs low as interrupt

signal. Connect to interrupt input of the system processor. Connect to GND if not

used.

Ordering Information

Note :

Richtek products are :

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

Marking Information

Pin Configurations

(TOP VIEW)

WL-CSP-8B 1.6x1.52 (BSC)

RT9428

Package Type

WSC : WL-CSP-8B 1.6x1.52 (BSC)

1SW

1S : Product Code

W : Date Code

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