BQ24109RHLR

Battery Chargers Overview

The BQ24109RHLR is a standalone synchronous buck battery charger IC designed for single-cell Lithium-ion and Lithium-polymer batteries. It operates within an input supply voltage range of 4.3 V to 16 V, delivering a regulated output current of 2 A at a fixed output voltage of 4.2 V. The device is housed in a 20-pin VQFN package (RHL) with dimensions of 3.5 x 4.5 mm. It supports an operating temperature range from -40°C to +85°C and features a longer deglitch time for improved noise immunity.

Battery Chargers Feature Summary

• Integrates synchronous rectification for high-efficiency charging in a compact form factor
• Includes programmable input current limit and charge current control for flexible power management
• Features thermal regulation and thermal foldback to protect the device under high-temperature conditions

Battery Chargers Applications

• Portable consumer electronics requiring single-cell Li-Ion or Li-Po charging
• Handheld medical devices
• Industrial handheld instruments

Battery Chargers Procurement Notes

Verify the specific suffix RHL corresponds to the 20-pin VQFN package and tape-and-reel configuration. Confirm that the application circuit accounts for the specified 4.3 V minimum input voltage requirement. Ensure thermal design meets the +85°C maximum junction temperature constraints during operation.

Battery Chargers Selection Notes

Select this component when a single-cell synchronous charger with integrated FETs is required. It is suitable for designs needing a 2 A charge current capability within a small footprint. Compare against the BQ24100 if lower current or different pinout compatibility is needed, noting the BQ24109 offers specific deglitch improvements.

Battery Chargers Part Context

This part belongs to the BQ241xx series of bqSwitcher chargers from Texas Instruments. These are standalone switching battery chargers that integrate power MOSFETs, eliminating the need for external Schottky diodes. The series targets applications where board space and efficiency are critical constraints.

Battery Chargers Replacement Considerations

The BQ24100RHLR is a related variant within the same family. Verify functional equivalence regarding the longer deglitch time feature and ensure pin-to-pin compatibility before substitution.