用于便携式应用的双源 USB/AC 锂化学充电器 IC
LM3658SDEV
此产品已上市,且可供购买。 可提供某些产品的较新替代品。

描述/特性

技术文档

支持与培训

订购选项


主要文档
Download - PDF Icon

描述

Recommended tool:
bq24040 is the recommended alternative to the LM3658 devices. Please refer to the bq24040EVM for new device evaluation.


The LM3658 is a single chip charger IC designed for hand-held applications. The LM3658 can safely charge and maintain a single cell Li-Ion/Polymer battery operating from an AC wall adapter or the USB power source. Input power source selection of USB/AC is automatic. With both power sources present, the AC power source has priority. Charge current is programmed through an external resistor when operating from an AC wall adapter allowing charge currents from 50mA to 1000mA. When the battery is charged using USB power, charge currents of 100mA or 500mA are pin selectable. The termination voltage is controlled to within plus or minus .35% of 4.2V. The LM3658 requires few external components and integrates internal Power FETs, reverse current protection and current sensing. The internal power FETs are thermally regulated to obtain the most efficient charging rate for a given ambient temperature.

The LM3658 operatesin five phases: pre-qualification mode, constant-current mode, constant-voltage mode, topoff mode and maintenance mode. Additionally the LM3658-B charger IC operates as a linear Regulator or in "LDO mode" when the AC wall adapter is connected and no battery is present. Optimal battery management is obtained through the integration of thermal protection, battery temperature measurement and a multi-mode safety timer. The LM3658 provides two open-drain outputs for LED status indication or connection to a GPIO.

The LM3658 evaluation kit supports complete functional evaluation of the battery charger IC. All user accessible functions of the circuit can be controlled through jumpers. The evaluation kits are available in three options: LM3658SDEV, LM3658SDAEV, and LM3658SDBEV. For details of the various options, please refer to the ordering information table located in either the data sheet or Application Note 1517.

特性
  • Integrated power FETs with thermal regulation
  • Charges from either an AC wall adapter or USB power source with automatic source selection
  • 50mA to 1000 mA charge currents using AC wall adapter
  • Pin-selectable USB charge currents of 100 mA or 500 mA
  • LDO mode with 1A of source current is automatically invoked when the battery is absent and the AC wall adapter is connected
  • Continuous battery temperature monitoring
  • Built-in multiple safety timers
  • Charge status indication
  • Continuous over-current and temperature protection
  • Near-depleted battery pre-conditioning
  • Sleep mode with ultra low quiescent current
  • On-board Kelvin-sensing achieves plus or minus .35% termination accuracy.
  • Maintenance mode with automatic recharge
  • Thermally enhanced 3 mm x 3 mm LLP package

Applications:

  • Smartphones
  • Digital still cameras
  • PDAs
  • Hard drive and flash-based MP3 players
  • USB-powered devices

立即订购
器件型号 从德州仪器 (TI) 或第三方购买 结帐选项 状态

LM3658SDEV/NOPB:
Dual Source USB/AC Li Chemistry Charger IC for Portable Applications

$99.00(USD)


价格可能会不同



ACTIVE

应遵守 TI 的评估模块标准条款与条件

技术文档
用户指南 (1)
标题 类型 大小 (KB) 日期 下载最新英文版本
PDF 67 2013年 4月 30日
更多文献资料 (1)
标题 类型 大小 (KB) 日期 下载最新英文版本
PDF 38 2019年 1月 2日
相关产品

TI 器件 (1)

器件型号 名称 产品系列
LM3658  用于便携式应用的双源 USB/AC 锂化学充电器 IC  电池管理 IC 

支持与培训

搜索我们广泛的在线知识库,可全天候获得数百万个技术问题和答案。

从 TI 专家处搜索答案

由TI和其社区用户提供的内容仅符合当时状况,不视为TI的标准说明。
请详见网站使用条款

如果您对质量、包装或订购 TI 产品有疑问,请访问我们的支持页面

技术文章