The BL4056-42PEP is a complete constant-current/constant-voltage linear charger for single-cell lithium-ion batteries. It is manufactured by SHANGHAI BELLING CO., LTD., and is commonly used in portable devices and battery-powered applications.

Applications

• Charging Lithium-Ion Batteries in Portable Devices
• Battery Chargers for MP3 Players
• Charging Circuits for Bluetooth Applications
• Charging Small Rechargeable Devices
• Battery Charging in IoT Devices

Features

• Charging Method: Constant Current/Constant Voltage (CC/CV)
• Preset Charge Voltage: 4.2V
• Programmable Charge Current: Up to 1A
• Input Voltage Range: 4.5V to 6.5V
• Termination Current: Adjustable
• Thermal Regulation: Yes
• Package: ESOP-8

Benefits

• Complete Charger: Integrated solution simplifies battery charging design.
• Constant Current/Constant Voltage: Ensures proper charging of lithium-ion batteries.
• Thermal Regulation: Prevents overheating during charging.
• Adjustable Charge Current: Allows for optimized charging based on battery capacity.
• Compact Package: ESOP-8 package is small and suitable for portable devices.

Additional Details

The BL4056-42PEP provides a complete charging solution for single-cell lithium-ion batteries, automatically switching between constant current and constant voltage modes to optimize the charging process. It includes thermal regulation to prevent overheating and can be configured to provide charge currents up to 1A. The device typically includes a termination function, ending the charge cycle when the current drops below a preset threshold. The external resistor is used to program the charge current. Reverse blocking protection is integrated. It's commonly used in battery-powered devices that require a compact and efficient charging solution.