RT9420

2

DS9420-01

October 2014

www.richtek.com

©

Copyright

2014 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

Function Pin Description

Pin No.

Pin Name

Pin Function

1

TEST

Test Pin. Connect to GND pin during normal operation.

2

VBAT

Battery Voltage Measurement Input.

3

VDD

Processor Power Input. Decouple with a 10nF capacitor.

4

GND

Ground.

5

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.

6

QS

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

during normal operation.

7

SCL

Serial Clock Input. Slave I

2

C clock line for communication with system.

8

SDA

Serial Data Input. Slave I

2

C data line for communication with system.

9 (Exposed Pad)

GND

The exposed pad must be soldered to a large PCB and connected to GND for

maximum power dissipation.

Ordering Information

Note :

Richtek products are :

ments of IPC/JEDEC J-STD-020.

Pin Configurations

(TOP VIEW)

WDFN-8L 2x3

TEST

GND

VBAT

SDA

SCL

QS

ALERT

VDD

9

7

6

5

1

2

3

4

8

RT9420

Package Type

QW : WDFN-8L 2x3 (W-Type)

Lead Plating System

G : Green (Halogen Free and Pb Free)

Marking Information

06W

06 : Product Code

W : Date Code