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BQ24250RGER

TIBQ24250RGER

Texas Instruments
Charger IC Lithium Ion 24-VQFN (4x4)
NRND33,224 in stock

Overview

The BQ24250RGER is a highly integrated single-cell Li-Ion battery charger with power path management and I2C control. It features a high-efficiency 3 MHz synchronous switch-mode buck converter and is capable of providing up to 2A of charge current from a maximum operating input voltage of 10.5V. The device is designed to support system operation even with a deeply discharged or missing battery.

Why Choose This Part

This IC offers a compact footprint by using a high-frequency 3 MHz PWM controller that supports small inductors. It provides excellent flexibility through I2C-programmable battery charge voltage, charge current, and input current limits. The AnyBoot algorithm ensures reliable system startup from deeply discharged batteries, while the power path management allows the system to be powered simultaneously during battery charging.

Applications

Portable Media Players
Utilizes the 2A charge current and 3 MHz switching frequency to minimize charging time and board space.
Handheld Industrial Devices
Benefits from the 22V absolute maximum input rating for protection against high-voltage transients.
Smartphones and Tablets
Leverages BC1.2 D+/D- detection for USB-compliant charging and I2C programmability for flexible power management.
Battery-Powered IoT Gateways
Uses the integrated 50 mA LDO and JEITA-compliant NTC monitoring for safe and reliable outdoor operation.

Key Specifications

Interface I2C
Mounting Type Surface Mount
Package / Case 24-VFQFN Exposed Pad
Number of Cells 1
Fault Protection Over Temperature, Over Voltage
Battery Chemistry Lithium Ion
Current - Charging Constant - Programmable
Battery Pack Voltage 4.2V
Charge Current - Max 2A
Operating Temperature -40degC ~ 85degC (TA)
Programmable Features Current
Voltage - Supply (Max) 10.5V
Supplier Device Package 24-VQFN (4x4)

Getting Started

Engineers should evaluate this part using the BQ24250EVM evaluation module. Configuration is performed via the I2C interface to set charge parameters like VBATREG and ICHG. Ensure the thermal pad of the 24-VQFN package is properly soldered to a large ground plane to handle the heat dissipation at 2A charge rates.

Also Consider

MCP73833 MCHPMicrochip - A simpler, lower-cost linear charger alternative for applications that do not require high-efficiency switching or I2C control.