CN3702

The CN3702 is a lithium battery charging IC. Equivalent alternatives include:
- TP4056 (single-cell, linear charger)
- BQ24075 (TI, similar features)
- MCP73831 (Microchip, single-cell)
- LTC4054 (Linear Tech, compact charger)
These offer similar functionality for Li-ion/LiPo charging but may vary in specs like current rating or input voltage. Check datasheets for exact compatibility.

The CN3702 is a versatile Li-ion/LiFePO4 battery charge controller IC with the following key features:
- Input Voltage Range: 4.5V to 28V, suitable for various power sources.
- Charge Current: Adjustable up to 2A (with external resistor).
- Battery Compatibility: Supports single-cell Li-ion (4.2V) and LiFePO4 (3.6V).
- Charge Modes: Precharge, constant current (CC), and constant voltage (CV).
- Automatic Recharge: Initiates when battery voltage drops below a threshold.
- Charge Status Indicators: LED outputs for charging/full status.
- Protections: Overvoltage, reverse polarity, and thermal shutdown.
- Low Quiescent Current: ~3µA in shutdown mode, reducing power loss.
- Package: Compact SOP-8 form factor.
Ideal for portable devices, solar chargers, and backup power systems.

The CN3702 is a lithium-ion battery charge management IC manufactured by ConvenientPower Systems (CPS).
CPS is a Chinese semiconductor company specializing in power management ICs, particularly for battery charging, LED drivers, and DC-DC converters. Founded in 2007 and headquartered in Shenzhen, CPS focuses on cost-effective, integrated solutions for consumer electronics, IoT, and portable devices.
The CN3702 is a linear charger supporting single-cell Li-ion/LiFePO4 batteries with features like programmable charge current, thermal regulation, and automatic recharge. It is commonly used in solar-powered systems, handheld devices, and backup power applications.
CPS is known for providing reliable, low-cost alternatives to Western brands, catering mainly to the Asian market.

The CN3702 is a lithium-ion battery charge management IC, primarily used in:
1. Portable Electronics – Smartphones, tablets, and Bluetooth devices.
2. Power Banks – Efficient charging and protection for mobile power sources.
3. Solar Chargers – Energy harvesting systems for sustainable charging.
4. Electric Toys & Tools – Safe charging for battery-powered gadgets.
5. Medical Devices – Reliable power management for portable equipment.
It supports 4.2V/4.35V batteries with features like overcharge protection and thermal regulation.

The CN3702 is typically available in a SOP-8 (Small Outline Package) with 8 pins. This compact surface-mount package is widely used for its efficiency in power management applications, such as battery charging. The SOP-8 offers good thermal performance and ease of PCB integration. Always verify the exact package in the datasheet, as variations may exist.