RT4723

Copyright © 2016 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

DS4723-00

April

2016

www.richtek.com

1

Dual Output AMOLED Bias

General Description

The RT4723 is a highly integrated Boost, LDO 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 steps

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 2.5V to 4.6V, RT4723 is

optimized for products powered by single-cell battery

and the output current up to 30mA. The RT4723 is

available in WL-CSP-15B 1.39x2.07 (BSC) package to

achieve optimized solution for PCB space.

Ordering Information

Package Type

WSC : WL-CSP-15B 1.39x2.07 (BSC)

RT4723

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.

Features



2.5V to 4.6V Supply Voltage Range



Single Wire Protocol



Fixed 4.6V Positive Voltage Output



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 15-Ball WL-CSP Package

Applications



AMOLED Bias in Portable Device

Marking Information

36 : Product Code

W : Date Code

36W

Simplified Application Circuit

BOOST

L1

PGND

VIN

LXP

SWIRE

VOP

VON

C1P

RT4723

GND

C1N

C2P

C2N