BQ21061YFPT

Battery Chargers Overview

The BQ21061YFPT is a highly integrated, I2C-controlled single-cell linear battery charger designed for wearable and portable devices. It combines a 500-mA linear charger with PowerPath management, providing regulated system voltage (PMID) and an LDO output. The device features ultra-low quiescent current of 10 nA in ship mode to extend battery life. Input voltage tolerance reaches 20 V, supporting operation from weak adapters. The component utilizes a 20-pin DSBGA package measuring 2 mm by 1.6 mm.

Battery Chargers Feature Summary

• Integrates linear charging, power path management, and LDO regulation in a single chip
• Features ultra-low 10-nA ship mode current to maximize standby battery life
• Supports 20-V input tolerance for robust adapter compatibility
• Enables dynamic power path optimization via I2C programmable parameters

Battery Chargers Applications

• Wireless headphones and earbuds
• Smartwatches and fitness trackers
• Hearing aids
• Portable medical glucose monitors

Battery Chargers Procurement Notes

Verify the specific suffix YFPT against official Texas Instruments documentation to confirm package type and reel specifications. Ensure the source document explicitly identifies this part number as distinct from similar variants like BQ21062. Cross-reference the manufacturer's latest datasheet to confirm RoHS compliance status and operating temperature ranges before finalizing procurement decisions.

Battery Chargers Selection Notes

Select this component when designing compact wearable systems requiring simultaneous charging and system power delivery. The integrated PowerPath allows operation directly from the adapter while charging the battery. Choose this part for applications demanding minimal PCB area due to its small CSP footprint and high level of integration compared to discrete solutions.

Battery Chargers Part Context

This device belongs to the BQ2106x family of battery management ICs from Texas Instruments. It is specifically engineered for space-constrained portable electronics. The family focuses on simplifying design by merging charging, power routing, and system regulation functions into a single solution, reducing component count and board space requirements for modern wearable form factors.

Battery Chargers Replacement Considerations

The BQ21062 series offers similar functionality but includes a load switch instead of an LDO. Verify if the specific load switch requirement aligns with system needs. Consult official substitution guides to ensure pinout and electrical characteristics match the existing design constraints.