The TP4054 is a high-efficiency single-cell lithium-ion battery charging IC from the “Other Series,” designed for safe and reliable constant-current/constant-voltage (CC/CV) charging in compact portable electronic devices. Built using advanced linear charging control technology, it ensures precise charge regulation, stable thermal performance, and strong battery protection during charging cycles.
Operating from a 4.5V to 8V input supply, the TP4054 provides optimized charging performance for 3.7V Li-ion and Li-polymer batteries with a final charge voltage of 4.2V. Compared to lower-voltage charging solutions, this wider input range improves system flexibility, enhances compatibility with USB and adapter power sources, and ensures stable operation in various embedded power designs.
The device delivers up to 500mA programmable charge current, featuring automatic charge termination, thermal regulation, and trickle charge functionality for deeply discharged batteries. Its integrated protection mechanisms prevent overcharging, overcurrent, and overheating, ensuring long-term battery safety and reliability.
The TP4054 is widely used in portable electronics where compact size and efficient battery management are critical. Its linear charging architecture provides low noise operation and simplified circuit design, reducing external component count while maintaining high charging accuracy.
Available in compact SOT23 package, the TP4054 enables ultra-small PCB layouts and is ideal for space-constrained applications requiring efficient lithium battery charging solutions.
Key Features & Applications (Combined)
- Single-cell Li-ion/Li-Po battery charger IC
- CC/CV charging control (4.2V regulation)
- Input voltage range: 4.5V–8V
- Up to 500mA programmable charge current
- Thermal regulation and battery protection
- Low noise linear charging design
- Compact SOT23 package
- High reliability and safe charging performance
Applications:
- Portable electronic devices
- USB-powered charging circuits
- Wearable devices
- Power banks and battery modules
- Embedded battery management systems
- Consumer electronics charging solutions
- General-purpose Li-ion charging applications
