CL4054D

Introduction to CL4054D
CL4054D is a single-cell lithium-ion battery charging IC designed for portable electronics. It features a compact design, low power consumption, and supports constant-current/constant-voltage (CC/CV) charging. Key specifications include:
- Input Voltage: 4.25V–6.5V
- Charging Current: Up to 500mA (adjustable)
- Charge Termination: Auto-cutoff at full charge (4.2V ±1%)
- Protections: Overvoltage, overcurrent, and thermal shutdown
It integrates a power MOSFET, reverse-blocking diode, and status indicators, reducing external components. Applications include Bluetooth devices, wearables, and small battery-powered gadgets.
For detailed usage, refer to the datasheet for circuit design and current-setting resistor calculations.

The CL4054D is a lithium-ion battery charge management IC. Equivalent alternatives include:
- TP4054 (similar specs, widely used)
- LTC4054 (Linear Technology, higher-end)
- MCP73831 (Microchip, comparable functionality)
- BQ24040 (TI, advanced features)
- ETA4054 (Eta Semiconductor, pin-compatible)
Check datasheets for exact compatibility in voltage, current, and features.

The CL4054D is a single-cell Li-ion battery charging IC with the following key features:
- Input Voltage: 4.5V to 6.5V (USB-compatible).
- Charging Current: Up to 800mA (adjustable via external resistor).
- Charge Termination: Auto-cutoff at 4.2V (±1% accuracy).
- Protections: Overvoltage, overcurrent, and thermal shutdown.
- Pre-Charge Mode: For deeply discharged batteries.
- Status Indication: LED or logic output for charging/full state.
- Package: SOP-8 (compact and easy to integrate).
Ideal for portable devices like Bluetooth earphones, smartwatches, and IoT gadgets.

The CL4054D is a lithium-ion battery charge controller IC manufactured by Chinese semiconductor company Shenzhen Chipown Micro-electronics Limited (Chipown).
Chipown is a fabless IC design company specializing in power management, motor control, and LED driver solutions. Founded in 2003, it provides cost-effective chips for consumer electronics, industrial applications, and automotive systems. The CL4054D is a linear charger IC designed for single-cell Li-ion/Li-polymer batteries, commonly used in portable devices.
Chipown is known for competitive pricing and reliable performance, catering primarily to the Asian market.

The CL4054D is a linear lithium-ion battery charging IC. Its main application areas include:
1. Portable Electronics – Charging single-cell Li-ion/Li-Po batteries in devices like Bluetooth headsets, smartwatches, and handheld gadgets.
2. Consumer Electronics – Used in power banks, digital cameras, and small rechargeable devices.
3. IoT & Wearables – Supports low-power charging for sensors, fitness trackers, and wireless modules.
4. Medical Devices – Powers compact medical equipment like hearing aids and portable monitors.
5. Backup Power Systems – Maintains battery charging in small UPS and emergency lighting.
It features overcharge protection, thermal regulation, and trickle charging, making it ideal for compact, battery-powered applications.

The CL4054D is typically available in a SOT-23-5 package, a small surface-mount transistor outline with 5 pins. This compact package is widely used for low-power applications, such as battery charging ICs, due to its small footprint and efficient thermal performance. Suitable for automated PCB assembly, it’s ideal for space-constrained designs.