RT9481 datasheet(24/41 Pages) RICHTEK

24 / 41 page

RT9481

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS9481-00 June 2015

2C Register Map

Function

Address

b[7]

(MSB)

b[6]

b[5]

b[4]

b[3]

b[2]

b[1]

b[0]

(LSB)

Low BAT

CTRL

0X00

Meaning

Fix_ Freq

Sel_

SWFreq

Higher_

OCP

LBP

Enable

LBP[2:0]

Default

Read/

Write

R/W

Fix_Freq

Control the switching frequency to be dynamic or fix

0 : Auto-change frequency

1 : Fixed frequency (default)

Sel_ SWFreq

The switching frequency selection bit (Charger/ Boost)

0 : The switching frequency is 1.5MHz

1 : The switching frequency is 0.75MHz (default)

Higher_ OCP

Higher_OCP enable

0 : Disable (default)

1 : Higher IL OCP level selection of buck mode and boost mode

0 : Not high impedance mode (default)

1 : High impedance

LBP Enable

Low Battery Protection Enable

0 : Disable

1 : Enable (default)

LBP[2:0]

Define Low Battery Protection Level. The default voltage is 3V.

Code

Voltage

Code

Voltage

Code

Voltage

Code

Voltage

000

2.5V

010

2.7V

100

2.9V

110

3.1V

001

2.6V

011

2.8V

101

(default)

111

3.2V

RT9481 Datasheet(PDF) 24 Page - Richtek Technology Corporation

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