CN3085

The CN3085 is a single-cell lithium-ion battery charging IC designed for portable applications. It features constant current/constant voltage (CC/CV) charging with adjustable charging current (up to 1A) and a built-in thermal regulation system to prevent overheating.
Key features:
- Input voltage range: 4.35V to 6.5V (supports USB and adapter power).
- Programmable charging current via an external resistor.
- Automatic recharge when battery voltage drops below a threshold.
- Charge status indication (LED or MCU interface).
- Battery temperature monitoring (NTC support).
Applications include smartphones, Bluetooth devices, and portable electronics. The CN3085 integrates overvoltage, reverse polarity, and short-circuit protection, ensuring safe and efficient charging.
Its compact SOP-8 package makes it suitable for space-constrained designs. For detailed specs, refer to the datasheet.

The CN3085 is a lithium-ion battery charging IC. Equivalent alternatives include:
- TP4056 (common, low-cost)
- MCP73831 (Microchip, similar specs)
- BQ24075 (TI, higher efficiency)
- LTC4054 (Analog Devices, compact)
- MAX1555 (Maxim, USB-compatible)
These offer similar charging functionality (5V input, 1A max current). Choose based on cost, package, or additional features like thermal regulation.

The CN3085 is a lithium-ion battery charging IC with the following key features:
- Input Voltage Range: 4.35V to 6.5V (supports USB or adapter power).
- Charging Current: Adjustable up to 1A (set via external resistor).
- Charge Termination: Auto-cutoff at 4.2V (±1%) with configurable trickle charge for deeply discharged batteries.
- Thermal Regulation: Reduces current if temperature exceeds 60°C for safety.
- Status Indication: LED or MCU-readable signals for charging/full states.
- Protections: Reverse polarity, overvoltage, and short-circuit protection.
- Package: Compact SOT23-6 for space-constrained designs.
Ideal for portable devices like Bluetooth earphones, smartwatches, and IoT gadgets.

The CN3085 is a 6-pin SOT-23 lithium battery charging IC with the following functions:
1. Input (VIN) – Power supply (4.5V–6.5V).
2. GND – Ground.
3. BAT – Connects to the battery for charging.
4. PROG – Sets charging current via an external resistor.
5. STAT – Open-drain output indicating charging status (low = charging, high = complete/fault).
6. CE – Enable pin (high = active, low = shutdown).
It supports 500mA max charging current, 4.2V termination voltage, and includes thermal regulation and auto-recharge.

The CN3085 is a lithium-ion battery charge management chip manufactured by ConvenientPower Semiconductor (CPS), a Chinese company specializing in power management ICs.
CPS focuses on designing and producing analog and mixed-signal integrated circuits, including battery management, LED drivers, and DC-DC converters. The company serves consumer electronics, IoT, and industrial applications, emphasizing cost-effective and energy-efficient solutions.
The CN3085 is designed for single-cell Li-ion/Li-Po charging, featuring constant current/constant voltage control and thermal regulation. It is commonly used in portable devices like Bluetooth headsets and smartwatches.
CPS is known for providing reliable, compact, and affordable power management solutions, catering primarily to the Asian market.

The CN3085 is available in a SOP-8 (Small Outline Package with 8 pins) package type. This compact surface-mount package is commonly used for battery charging ICs, offering ease of integration in space-constrained designs. Its pin configuration supports efficient charging control for single-cell Li-ion/Li-polymer batteries.