BQ24157SYFFR

Battery Chargers Overview

The BQ24157SYFFR is a synchronous switch-mode single-cell lithium-ion and lithium-polymer battery charger integrated circuit manufactured by Texas Instruments. It operates within an input voltage range of 4V to 6V and supports a maximum charge current of 1.55A. The device utilizes a 20-DSBGA package and features an I2C interface for programmable charging parameters, including current, voltage, and timer settings. It incorporates spread spectrum frequency control to improve electromagnetic interference performance and includes comprehensive protection mechanisms such as thermal regulation and reverse leakage prevention.

Battery Chargers Feature Summary

• Integrates synchronous PWM controller and power MOSFETs for high-efficiency charging in a compact footprint
• Supports programmable charge parameters via I2C interface with high accuracy regulation
• Includes spread spectrum frequency control to enhance electromagnetic interference performance
• Features dynamic power management and automatic termination based on battery voltage and minimum current thresholds

Battery Chargers Applications

• Single-cell lithium-ion battery packs in portable devices
• Lithium-polymer battery management in mobile electronics
• Mini-USB or AC-powered battery chargers
• Applications requiring low power consumption and robust protection

Battery Chargers Procurement Notes

Verify the exact suffix 'YFFR' against the manufacturer's official datasheet to confirm pinout and electrical specifications match your design requirements. Confirm RoHS3 compliance status through the latest documentation. Ensure the 20-DSBGA package dimensions align with your PCB layout constraints before finalizing procurement decisions.

Battery Chargers Selection Notes

Select this component when designing systems requiring a fully integrated switch-mode charger for single-cell batteries. It is suitable for applications needing precise current and voltage regulation via digital control. Consider its operating temperature range and protection features for environments demanding reliable battery management without external discrete power switches.

Battery Chargers Part Context

This part belongs to the BQ2415x family of battery chargers from Texas Instruments. These devices are designed for portable applications, offering a balance of efficiency and integration. The BQ24157 variant specifically targets higher current capabilities compared to lower-end models in the series, providing flexibility for various battery chemistries and form factors.

Battery Chargers Replacement Considerations

Publicly documented substitutes include BQ24151AYFFR and BQ24153AYFFR. Verify compatibility regarding maximum charge current and package type before substitution. Cross-reference datasheets to ensure equivalent protection features and interface protocols are maintained in the new design.