Datasheet > RT9527JH

RT9527JH

更新时间： 2024-04-09 18:58:24

品牌	Logo	应用领域
立锜 - RICHTEK		电池
页数	文件大小	规格书
20页	944K
描述
Single Cell Li-Ion Battery Charger with Adjustable Charging Current for Portable Applications

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RT9527JH 数据手册

RT9527J/JH/JA

Single Cell Li-Ion Battery Charger with Adjustable Charging

Current for Portable Applications

General Description

The RT9527J/JH/JA is a low cost single-cell Li-ion

battery charger for low charge current applications.

Features

⚫ 28V Maximum Rating for AC Adapter

⚫ Internal Integrated Power FETs

⚫ Adjustable Charging Current

⚫ Programmable Safe Charge Timer

⚫ NTC Thermistor Input

The RT9527J/JH/JA can be powered up from an AC

adapter or USB (Universal Serial Bus) port inputs. The

RT9527J/JH/JA enters sleep mode when VIN power is

removed. The RT9527J/JH/JA optimizes the charging

task by using a control algorithm, which includes pre-

charge mode, fast-charge mode and constant voltage

mode. The charging task is kept in constant voltage

mode to hold the battery in a full charge condition. The

charge current is adjustable via an external resistor. The

internal thermal feedback circuitry regulates the die

temperature to optimize the charge rate for all ambient

temperatures. The RT9527J/JH/JA features 28V

maximum rating voltage for VIN. Other features include

undervoltage protection and overvoltage protection for

the AC adapter supply.

⚫ Reverse Battery Protection

⚫ ISET Pin Short Protection

⚫ Charge Status Indicator

⚫ AC Adapter Power Good Status Indicator

⚫ End of Charge Current is 10% of Fast-Charge

Current

⚫ Undervoltage Protection

⚫ Overvoltage Protection

⚫ Battery Pack Temperature Monitoring (Hot,

Warm, Cool and Cold 4 Thresholds)

⚫ Thermal Feedback Optimized Charge Rate

⚫ Small Thermally Enhanced 8-Lead WDFN

Package

The RT9527J/JH/JA is available in the WDFN-8L 2x2

package. The recommended junction temperature

range spans from −40C to 125C, while the ambient

temperature range extends from −40C to 85C.

⚫ RoHS Compliant and Halogen Free

Applications

⚫ Cellular Phones

⚫ Digital Cameras

⚫ PDAs and Smart Phone

⚫ Portable Instruments

Simplified Application Circuit

VIN

BAT

Input Power

RT9527J/JH/JA

VIN

PGOOD

CHG

Indicator

Battery

TIMER

ISET

GND

is a registered trademark of Richtek Technology Corporation.

DS9527J/JH/JA-03 October 2023

www.richtek.com

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