RT9527 查看數據表（PDF） - Richtek Technology

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RT9527

Single Cell Li-Ion Battery Charger with Adjustable Charging Current for Portable Applications

Richtek Technology 

RT9527

Pin Configurations

(TOP VIEW)

VIN 1

PGOOD 2

CHG 3

GND 4

8 BAT

7 TS

6 TIMER

9 5 ISET

WDFN-8L 2x2

Functional Pin Description

Pin No.

Pin Name

Pin Function

1

VIN

Supply Voltage Input. VIN can withstand up to 28V input.

2

PGOOD

Power Good Status Output. Active-low, open-drain output.

3

CHG

Charger Status Output. Active-low, open-drain output.

4,

9 (Exposed Pad)

GND

Ground. The exposed pad must be soldered to a large PCB and connected to

GND for maximum power dissipation.

5

ISET

Charge Current Setting.

6

TIMER

Safe-Charge Timer Setting.

7

TS

Temperature Sense Input. The TS pin connects to a battery’s thermistor to

determine whether the battery is too hot or too cold for charging operation. If the

battery’s temperature is out of range, charging is paused until it re-enters the

valid range.

8

BAT

Charge Current Output for Battery.

Function Block Diagram

BAT

VIN

ISET

Switch

Well

BASE

VREF

IBIAS

Sleep

Mode

Current

Set Block

OVP

UVLO

CC/CV/TR

Multi Loop

Controller

Logic

VIN

Thermal

Circuit

Too Cold +

-

+

TS

Too Hot

-

TIMER

TMIER

CHG

PGOOD

GND

Copyright ©2014 Richtek Technology Corporation. All rights reserved.

www.richtek.com

2

is a registered trademark of Richtek Technology Corporation.

DS9527-02 May 2014

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