AAT3620 Single Cell Li+ Switch Mode Battery Charger
The BatteryManager™ AAT3620 is an ideal solution for charging high capacity Li+ batteries. The AAT3620 can supply up to 2.0A charge current with minimal thermal impact to mobile systems with features such as color display, camera with flash, organizer, video, etc, that require battery capacity to keep pace with the power requirements. The AAT3620 is a PWM switch mode/linear charger with high charge efficiency at the full constant current (fast charge) rate. Based on a 1.5MHz PWM step-down “buck” converter, the AAT3620 PWM switch mode controls the constant current charge mode up to 2.0A, and automatically switches to linear mode charging during the battery conditioning low level current and the light load end of charge current termination region. The full charge rate and the end of charge current can be programmed with separate external resistors. A shared charge current indication pin is available for a Coulomb counter. Battery charge temperature and charge state are fully monitored for fault conditions. In the event of an over-current, over-voltage, short-circuit or over-temperature failure, the device will automatically shut down. Two status monitor output pins are provided to indicate the battery charge status and power source status though two display LEDs. The AAT3620 has a no-battery detection feature, "No-BAT", which requires the safety timer. The AAT3620-2 option is for applications where the safety timer may be disabled independently and the "No-BAT" feature is not required. The AAT3620 is available in a thermally enhanced, space-saving 14-pin 3mm x 3mm TDFN package.
技术特性
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订购信息 Ordering Information
应用领域 APPLICATION
功能框图 Functional Block Diagram
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| 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 |
| AAT3620 数据资料DataSheet下载:pdf | Rev.V2 | 2 页 |
