CN3795

The CN3795 is a PWM buck lithium-ion battery charge controller IC designed for single-cell applications. It supports 4.5V–28V input and delivers up to 4A charging current with high efficiency.
### Key Features:
- Buck topology for efficient step-down conversion.
- Programmable charge current (up to 4A) and charge voltage (4.2V default).
- Automatic power-path management (supports battery-powered systems).
- Thermal regulation to prevent overheating.
- Charge status indicators (LED or MCU-readable).
- Protections: Overvoltage, reverse polarity, and short-circuit.
### Applications:
- Portable devices (drones, power banks).
- Solar-powered systems.
- Low-power IoT devices.
The CN3795 simplifies charging circuit design while ensuring safe, efficient battery management. For detailed specs, refer to its datasheet.

The CN3795 is a solar charge controller IC. Equivalent alternatives include:
- BQ24650 (TI)
- LT3652 (Analog Devices)
- MPPT-1210-HUS (if MPPT functionality is needed)
- SPV1040 (STMicroelectronics)
These chips offer similar solar charging features, though specifications may vary slightly. Always check datasheets for compatibility.

The CN3795 is a 16-pin lithium battery charge management IC with the following key functions:
1. Input Voltage Range: 4.5V to 28V (supports solar panel input).
2. Charge Current: Adjustable up to 4A (with external MOSFET).
3. Charge Termination: Auto-cutoff at full charge (adjustable float voltage).
4. Protections: Overvoltage, overcurrent, and thermal shutdown.
5. Status Indicators: LED outputs for charging/fault conditions.
Pin Functions (Key Pins):
- VIN (Pin 1): Power input.
- BAT (Pin 2): Connects to battery.
- CS (Pin 3): Current sense.
- PROG (Pin 4): Charge current programming.
- STAT (Pin 5): Charge status output.
- GND (Pin 16): Ground.
It is commonly used in solar chargers, power banks, and lithium battery systems.

The CN3795 is a battery charge management controller IC manufactured by Consonance Electronics (上海如韵电子有限公司), a Chinese semiconductor company based in Shanghai.
Consonance Electronics specializes in analog and mixed-signal ICs, focusing on power management, battery charging, and LED driver solutions. The company targets consumer electronics, IoT, and portable devices, offering cost-effective alternatives to international brands.
The CN3795 is a solar-powered, single-cell Li-ion/LiFePO4 battery charger controller with MPPT (Maximum Power Point Tracking), commonly used in solar panels and renewable energy applications.
Consonance is known for its competitive pricing and localized support but is less prominent globally compared to brands like TI or Microchip.

The CN3795 is a solar charge controller IC primarily used in:
1. Solar Power Systems – For charging lithium-ion, lead-acid, and LiFePO4 batteries.
2. Portable Solar Devices – Such as solar chargers, power banks, and outdoor lighting.
3. Off-Grid Applications – Including solar street lights, remote monitoring systems, and small-scale renewable energy setups.
4. Battery-Powered Devices – Supports MPPT (Maximum Power Point Tracking) for efficient energy harvesting.
It is ideal for low-voltage solar panels (up to 28V) and provides overcharge/discharge protection, making it suitable for compact, energy-efficient designs.

The CN3795 is available in a SOP-8 (Small Outline Package) with 8 pins. This compact surface-mount package is commonly used for battery charging ICs, offering efficient thermal performance and space-saving design. It is suitable for applications like solar chargers and lithium-ion battery management.