RT4801HWSC datasheet(3/22 Pages) RICHTEK

tên linh kiện	RT4801HWSC

Giải thích chi tiết về linh kiện	Dual Output LCD Bias for Smartphones and Tablets

PDF	22 Pages

Scroll/Zoom	100%

nhà sản xuất	RICHTEK [Richtek Technology Corporation]

Trang chủ	http://www.richtek.com

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3 / 22 page

RT4801H

is a registered trademark of Richtek Technology Corporation.

DS4801H-00

May

2016

www.richtek.com

Function Block Diagram

SCP1

RP2

RP1

VOP

CF2

VIN

ENP

GND

PGND

LXP

PWM

Logic

UVLO

OCP1

RN2

RN1

SCP2

VON

DAC

Oscillator

VREF

Bandgap

Reference

-1x

Charge Pump

CF1

Soft-Start

ENN

SCL

LDO

VREF

DAC

SDA

VREF

Fast

Discharge

VOP

VON

BST

OVP

Operation

The RT4801H is a highly integrated Boost, LDO and

inverting charge pump to generate positive and

negative output voltages for LCD panel bias or

consumer products. It can support input voltage range

from 2.5V to 5.5V and the output current up to 80mA.

Both

positive

and

negative

voltages

can

programmed by a MCU through the dedicated I2C

interface. The RT4801H provides Over-Temperature

Protection (OTP) and Short Circuit Protection (SCP)

mechanisms to prevent the device from damage with

abnormal operations. When the EN voltage is logic low

for more than 375

s, the IC will be shut down with low

input supply current less than 1

A.

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