BQ21040 Description
The bq21040 device is a highly integrated Li-Ion and Li-Pol linear battery charger device targeted at spacelimited portable applications. The device operates from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.
BQ21040 Key Features
- 1 Charging
- 1% Charge Voltage Accuracy
- 10% Charge Current Accuracy
- Low Battery Leakage Current (1 µA)
- Programmable Charge Current using External Resistor up to 800 mA
- 4.2-V Li-Ion and Li-Pol Charger
- Protection
- 30-V Input Rating; with 6.6-V Input Overvoltage Protection
- Input Voltage Dynamic Power Management
- 125°C Thermal Regulation; 150°C Thermal Shutdown Protection