DESCRIPTION

· The bq21040 is a highly integrated Li-Ion and Li-Pol linear battery charger designed for space-limited portable applications.

· It operates from a USB port or AC adapter, supporting a high input voltage range with overvoltage protection.

· The device charges the battery in three phases: conditioning, constant current, and constant voltage, with internal temperature monitoring to adjust charge current.

FEATURES

· 1% Charge Voltage Accuracy and 10% Charge Current Accuracy.

· Programmable Charge Current up to 800mA using an external resistor.

· 4.2-V Li-Ion and Li-Pol Charger with 30-V Input Rating and 6.6-V Input Overvoltage Protection.

· Thermal Regulation at 125°C and Thermal Shutdown Protection at 150°C.

· Fixed 10-Hour Safety Timer and Status Indication for Charging/Done.

APPLICATIONS

· EPOS (Electronic Point of Sale) devices.

· Medical Endoscopes.

· BLE (Bluetooth Low Energy) Speakers and Headsets.

· Low-Power Handheld Devices.