SC8723 PRELIMINARY SPEC

SOUTHCHIP SEMICONDUCTOR

SOUTHCHIP CONFIDENTIAL, SUBJECT TO CHANGE

Copyright © 2021, Southchip Semiconductor Technology (Shanghai) Co., Ltd.

1

SC8723 High Efficiency, Synchronous, 3.5A Buck-Boost

Converter with Four Integrated MOSFETs

1

Descriptions

SC8723 is a synchronous 4-switch buck-boost converter

with four integrated switches. It provides excellent power

efficiency and voltage regulation no matter the output

voltage is higher, lower or equal to the input voltage.

SC8723 supports very wide input and output voltage range.

It can support applications from 2.7V to 24V input range and

3V to 22V output range and provides up to 3.5A output

current.

SC8723 employs average current-mode control. The output

voltage is adjusted by FB pin with resistors. The switching

mode (PSM /FPWM) and the switching frequency can be

adjusted by external setting. The device also provides

programmable output current limit which supports flexible

design for different applications.

SC8723 supports internal current limit, input under voltage

protection, output over voltage protection, output short

protection, FB short circuit protection and over temperature

protection

to

ensure

safety

under

different

abnormal

conditions.

The IC is in a 22 pin 3x3 QFN package.

2

Features

•

High Efficiency Buck-Boost Conversion

•

Few External Components

•

Integrated Low RDS(ON) Switches

•

Wide VIN Range: 2.7 V to 24 V

•

Wide VOUT Range:3V to 22V

•

Fixed 5.1V VOUT with FB tied to GND

•

Up to 3.5A Output Current

•

250K/500K/750K/1MHz Adjustable Switching Frequency

•

Adjustable Output Current Limit

•

Forced PWM Mode/ PSM Mode Selectable

•

EN control and Programmable UVLO

•

Internal Soft Start

•

Absolute Input and Output Over Voltage Protection

•

Output Short Protection with Hiccup Mode

•

Thermal Shutdown Protection

•

Under Voltage Protection

•

Over Voltage Protection

•

QFN-22 FC 3 x 3 Package

3

Applications

•

USB Type C Hub

•

Power Bank with Quick Charge

•

Wireless Charger

•

Wall Adapter

•

Industry Power Supplies

4

Device Information

Part Number

Package

Dimension

SC8723QFKR

22 pin QFN

3.0mm x 3.0mm x 0.75mm

TEL:17512016690 QQ:1843079631