AAT2557 500mA Battery Charger and 300mA LDO Regulator for Portable Systems

The AAT2557 is a fully integrated 500mA battery charger and a 300mA low dropout (LDO) linear regulator. The input voltage range is 4V to 6.5V for the battery charger and 2.7V to 5.5V for the linear regulator, making it ideal for applications operating with single-cell lithium-ion/polymer batteries. The battery charger is a complete constant current/constant voltage linear charger. It offers an integrated pass device, reverse blocking protection, high accuracy current and voltage regulation, charge status, and charge termination. The charging current is programmable via external resistor from 15mA to 500mA. In addition to these standard features, the device offers over-voltage, current limit, and thermal protection. The linear regulator is designed for fast transient response and good power supply ripple rejection. Capable of up to 300mA load current, it includes short-circuit protection and thermal shutdown. The AAT2557 is available in a Pb-free, thermally-enhanced TSOPJW-14 package and is rated over the -40°C to +85°C temperature range.

技术特性

Battery Charger:
Input Voltage Range: 4V to 6.5V
Programmable Charging Current up to 500mA
Highly Integrated With
Charging Device
Reverse Blocking Diode
Linear Regulator:
300mA Output Current
Low Dropout: 400mV at 300mA
Fast Line and Load Transient Response
High Accuracy: ±1.5%
70μA Quiescent Current
Short-Circuit, Over-Temperature, and Current Limit Protection
TSOPJW-14 Package
-40°C to +85°C Temperature Range

应用领域 APPLICATION

Bluetooth™ Headsets
Cellular Phones
Handheld Instruments
MP3 and Portable Music Players
PDAs and Handheld Computers
Portable Media Players

订购信息 Ordering Information

AAT2557

AAT2557 典型应用

应用技术支持与电子电路设计开发资源下载	版本信息	大小
AAT2557 数据资料DataSheet下载:pdf	Rev.V2	2 页