Datasheet > RT4731

RT4731

更新时间： 2024-04-09 18:59:49

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
15页	1379K
描述
Triple Output AMOLED Bias

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RT4731 数据手册

RT4731

Triple Output AMOLED Bias

Features

General Description

 2.9V to 4.8V Supply Voltage Range

The RT4731 is a highly integrated Boost, two LDOs

(one channel for AVDD and the other channel for VOP)

and inverting charge pump to generate positive and

negative output voltage. The negative output voltages

can be adjusted from 0.6V to 2.4V with 100mV per

step by SWIRE interface protocol. The part maintains

the highest efficiency by utilizing a 0.33x/0.5x mode

fractional charge pump with automatic mode transition.

With its input voltage range of 2.9V to 4.8V, the RT4731

is optimized for products powered by single-cell battery

and the output current up to 30mA. The RT4731 is

available in UBGA-21B 1.82x3.23 package to achieve

optimized solution for PCB space.

 Single Wire Protocol

 Fixed 4.6V Positive Voltage Output

 Positive Output Voltage AVDD 2.8V

 Negative Voltage Output from 0.6V to 2.4V per

0.1V by SWIRE Pin

 Auto-Mode Transition of 0.33x/0.5x Charge

Pump

 Built-in Soft-Start

 30mA Maximum Output Current

 Programmable Output Fast Discharge Function

 High Impedance Output when IC Shutdown

 UVLO, OCP, SCP, OTP Protection

 Shutdown Current < 1A

 Available in 21-Ball UBGA Package

Applications

 AMOLED Bias in Portable Device

Ordering Information

RT4731

Marking Information

Package Type

QSU : UBGA-21B 1.82x3.23

00 : Product Code

W : Date Code

00W

Lead Plating System

G : Green (Halogen Free and Pb Free)

Note :

Richtek products are :

 RoHS compliant and compatible with the current

requirements of IPC/JEDEC J-STD-020.

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

Simplified Application Circuit

BST

LXP

BST

VIN

VOP

VON

RT4731

C2P

C2N

VOUT

AVDD

SWIRE

AVDD

AVDD_EN

C1P

C1N

GND

is a registered trademark of Richtek Technology Corporation.

DS4731-02 June 2019

www.richtek.com

12 3 4 5 6 7...15

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