TP4056-42-ESOP8

The TP4056-42-ESOP8 is a compact lithium-ion battery charger IC with the following key features:
- Input Voltage: 4.5V to 6.5V (USB-compatible).
- Charge Current: Adjustable up to 1A (default 1A).
- Charging Modes: Constant current (CC) and constant voltage (CV).
- Termination: Auto-cutoff at 4.2V (±1% accuracy).
- Protections: Over-temperature (OTP), reverse polarity, and overcurrent.
- Package: ESOP8 (small footprint, suitable for portable devices).
- Indicator LEDs: Charge status (red/green).
- Low Standby Current: ~3µA when idle.
Ideal for single-cell Li-ion/LiPo batteries in compact applications like wearables and IoT devices.

The TP4056-42-ESOP8 is a lithium-ion battery charging IC manufactured by Shenzhen Top Power ASIC Corp. (Top Power), a Chinese semiconductor company specializing in power management ICs.
Top Power focuses on designing and producing analog and mixed-signal chips, including battery chargers, DC-DC converters, and LED drivers. The company serves consumer electronics, IoT, and portable device markets.
The TP4056-42-ESOP8 is a popular single-cell Li-ion charger with features like constant current/constant voltage charging and thermal regulation. It is widely used in low-cost, compact applications.
For detailed specifications, refer to Top Power’s official documentation or authorized distributors.

The TP4056-42-ESOP8 is packaged in an ESOP-8 (Exposed Small Outline Package) with 8 pins. It features an exposed thermal pad for better heat dissipation, commonly used in compact PCB designs. The "42" may refer to a specific variant or marking. This package is suitable for surface-mount applications, especially in charging circuits.