BQ25731 BQ 25731 25731 BQ Charging IC

The BQ25731 is an advanced 1–5 cell NVDC buck–boost charger controller developed by Texas Instruments for high-efficiency, high-power battery systems. It features USB Type-C and USB Power Delivery (PD) support, allowing flexible power input from adapters or PD sources up to 26 V. The IC intelligently balances power between the system load and the battery, ensuring seamless operation during charge or discharge conditions.

With a digital SMBus/I²C interface, engineers can fine-tune voltage, current, and safety parameters. Its low standby current, robust protection design, and superior thermal performance make it ideal for notebooks, power banks, and embedded industrial systems.

Technical Summary

• Input Voltage Range: 3.5 V – 26 V
• Supports 1–5 Cell Li-Ion / Li-Polymer Batteries
• NVDC Buck–Boost Charging Mode
• USB PD and Type-C Support
• I²C / SMBus Communication
• Programmable Charge/Discharge Parameters
• High-Efficiency Power Path (> 90%)
• Protections: OVP, OCP, OTP, Thermal Shutdown
• Compact 32-pin QFN Package

OKSpare, your trusted Delhi Nehru Place supplier, we stock latest BQ25731 ICs, each tested for quality and performance before dispatch. With over 15 years of experience in the IC business, OKSpare guarantees authentic components, stable stock, and fast nationwide delivery.