LP4054 Single-Cell Li-Ion Linear Battery Charging IC SOT-23

TheLP4054 is a highly efficient, space-saving linear battery charger designed specifically for single-cell Li-Ion or Li-Polymer batteries. Operating from a USB or wall adapter input, it integrates all the necessary functions for safe and accurate charging. With its constant-current/constant-voltage (CC/CV) charging profile and thermal regulation, the LP4054 offers reliable battery management in portable applications. Housed in a compact SOT-23 package, it is perfect for handheld electronics and embedded systems.

Features

• Complete linear charger for single-cell Li-Ion batteries
• Constant-current/constant-voltage charging
• Preset 4.2V final charge voltage with 1% accuracy
• Thermal regulation prevents overheating
• No external MOSFET, sense resistor, or blocking diode required
• Charge status indicator output

Applications

• Portable devices
• Wearable electronics
• Bluetooth accessories
• Handheld instruments
• Battery-powered IoT modules

Specification