BQ24123RHLR

1-3 cell Li-ion/Polymer battery charger with up to 2 A synchronous buck architecture and enhanced EMI performance.

Product Description

Product Overview

The BQ24123RHLR from Texas Instruments is a highly integrated switch-mode charge management IC designed for Li-ion and Li-polymer battery packs. It includes synchronous power FETs supporting up to 2 A charge current and supports 1-, 2- or 3-cell battery configurations. The device uses a fixed-frequency PWM controller (~1.1 MHz) with 0% to 100% duty-cycle range, offering high-accuracy voltage and current regulation, temperature monitoring, reverse-leakage battery protection, and an automatic sleep mode.

Key Features

Synchronous buck charger architecture up to 2 A charge current.
Supports 1 to 3 cell Li-ion/Li-polymer battery packs.
Fixed-frequency PWM (~1.1 MHz) with 0%-100% duty-cycle range.
High-accuracy voltage/current regulation.
Integrated temperature monitoring, reverse battery discharge protection, thermal shutdown.
Enhanced EMI performance for noise-sensitive environments.

Applications

Smartphone and tablet battery charging circuits
Wearables power management
Portable media players and mobile devices
Industrial handheld instruments and battery-charging modules
Portable medical device power systems

Key Specifications

Parameter	Specification
Brand	Texas Instruments (TI)
Model	BQ24123RHLR
Function	1-3 cell lithium-ion/polymer battery charging manager
Maximum charging current	2 A
Number of batteries	Sections 1 to 3
Input voltage range / maximum	VIN input maximum 16 V, pin maximum rated approximately 20 V
Packaging	20-pin VQFN (3.5 mm × 4.5 mm)
Operating temperature range	-40°C to +85°C (typical)

RFQ & Support

Jaron offers genuine TI BQ24123RHLR with global availability and full technical support.
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