BQ21061YFPR

Battery Chargers Overview

The BQ21061YFPR is a highly integrated battery charger IC designed for wearable, portable, and small medical devices. It combines a linear battery charger with PowerPath management, an LDO, and a button controller in a single package. The device supports lithium-ion batteries with a charge current range of 1.25 mA to 500 mA. It features I2C programmable battery regulation voltage from 3.6 V to 4.6 V in 10 mV steps. The input voltage operating range is typically 3.4 V to 5.5 V with 20 V tolerance. The regulated system voltage (PMID) is configurable from 4.4 V to 4.9 V. It offers ultra-low quiescent currents, including 10 nA ship mode and 400 nA active mode. The component is housed in a 20-pin 2 mm x 1.6 mm DSBGA-20 CSP package.

Battery Chargers Feature Summary

• Integrates linear battery charger, PowerPath management, LDO, and button controller for compact system design
• Enables dynamic power path management to optimize operation from weak adapters while charging the battery
• Provides I2C programmability for charge current, termination current, and regulated system voltage settings
• Features ultra-low power consumption modes including 10 nA ship mode to extend battery life

Battery Chargers Applications

• Headsets, earbuds, and hearing aids
• Smartwatches and fitness trackers
• Wearable health and activity monitors
• Blood glucose monitors

Battery Chargers Procurement Notes

Verify the specific suffix YFPR corresponds to the required tape-and-reel packaging configuration. Confirm that the DSBGA-20 footprint matches the PCB layout guidelines provided in the official datasheet. Ensure the design accounts for the thermal performance requirements associated with the small form factor package during high-current charging operations.

Battery Chargers Selection Notes

Select this component when a single-chip solution is required for small battery applications. It is suitable for designs needing precise I2C control over charging parameters and system power rails. Consider the low quiescent current specifications for battery-powered devices requiring extended standby times. Verify compatibility with the host microcontroller's I2C interface for configuration.

Battery Chargers Part Context

This part belongs to the BQ2106x series of battery management ICs from Texas Instruments. It is functionally similar to the BQ21062, which includes additional load switch capabilities. The series targets miniaturized electronics where space constraints and power efficiency are critical. The integration of multiple power management functions reduces the overall bill of materials and board area.

Battery Chargers Replacement Considerations

The BQ21062YFPR is a related variant within the same family. Verify if the additional load switch functionality of the BQ21062 is required or if the LDO output of the BQ21061 is sufficient. Check pin-to-pin compatibility and software register mapping before substitution.