Battery Chargers

Devices that recharge batteries by supplying electrical energy to restore their charge.

• Lithium-ion Charger: Constant current/constant voltage (CC/CV) charging, protection circuits.
• NiMH/NiCd Charger: Delta V detection, trickle charge mode.
• Lead-Acid Charger: Multi-stage: bulk, absorption, float.
• Smart Charger: Microcontroller-based, auto-detect chemistry, charge status indicators.
• USB-Based Chargers: 5V input (USB-A, USB-C), often with PMICs (e.g., TP4056).

Key ICs: BQ24075, MCP73831, LT1510, MAX713.

Design Tips: Thermal management, reverse polarity protection, charge termination accuracy.