The BQ24745RHDT is a high-efficiency synchronous Battery Charger Controller with an integrated input-current comparator, offering low component count for space-constrained, multi-chemistry battery-charging applications. The input-current, charge-current and charge-voltage DACs allow very high regulation accuracies that can be easily programmed by the system power-management microcontroller using the SMBus interface. The bq24745 charges two, three, or four series Li+ cells. It features dynamic power management (DPM) and input power limiting. These features reduce battery-charge current when the input power limit is reached to avoid overloading the ac adaptor when supplying the load and the battery charger simultaneously. A highly accurate current-sense amplifier enables precise measurement of input current from the ac adapter, allowing monitoring the overall system power.
- High-accuracy voltage and current regulation
- Internal soft-start
- Dynamic power management (DPM)
- Simplified SMBus control interface
- Current sense amplifier for current drawn from input source
- ±0.5% Charge voltage accuracy
- ±3% Charge current accuracy
- ±3% Adapter current accuracy
- ±2% Input current sense amp accuracy
- Green product and no Sb/Br
电源管理, 工业, 医用, 便携式器材, 计算机和计算机周边, 通信与网络
(EN)
