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BQ24072RGTR

TIBQ24072RGTR

Texas Instruments
Charger IC Lithium Ion 16-VQFN (3x3)
Active21,015 in stock
Datasheet Digi-Key Compare Prices

Overview

The BQ24072RGTR is a highly integrated Li-Ion linear charger and system power path management IC designed for space-constrained portable applications. It operates from either a USB port or an AC adapter and supports charge currents up to 1.5A. The device features dynamic power path management (DPPM) which allows the system to remain powered while simultaneously charging the battery, even with a deeply discharged battery.

Why Choose This Part

This IC offers a high input voltage rating of 28V with overvoltage protection to shield against faulty power adapters. Its DPPM technology is superior to standard chargers because it prioritizes the system load and prevents the battery from unnecessarily discharging during high-current peaks. Additionally, the SYSOUT voltage tracks the battery voltage, which helps optimize efficiency for downstream low-dropout regulators.

Applications

Portable Media Players
Powers the system directly from the input source while managing the 4.2V Li-Ion battery charging cycle.
Handheld Device Charging
Utilizes USB-IF compliant current limits (100mA/500mA) to safely charge from standard computer ports.
IoT Sensor Nodes
Integrated NTC thermistor input and safety timers ensure reliable long-term battery maintenance in remote hardware.
Medical Wearables
The small 3x3mm VQFN package and integrated power path minimize PCB footprint in compact medical monitors.

Key Specifications

Interface USB
Mounting Type Surface Mount
Package / Case 16-VFQFN Exposed Pad
Number of Cells 1
Fault Protection Over Temperature, Over Voltage, Reverse Current, Short Circuit
Battery Chemistry Lithium Ion
Current - Charging Constant - Programmable
Battery Pack Voltage 4.2V
Charge Current - Max 1.5A
Operating Temperature -40degC ~ 125degC (TJ)
Programmable Features Current, Timer
Voltage - Supply (Max) 6.4V
Supplier Device Package 16-VQFN (3x3)

Getting Started

Engineers should evaluate this part using the BQ24072EVM evaluation module to test the DPPM threshold and charging curves. Ensure the thermal pad of the 16-VQFN package is soldered to a large ground plane to manage heat dissipation during 1.5A fast-charge operations. Programming the fast-charge current and input current limit requires only two external resistors on the ISET and ILIM pins.

BQ24072 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Temp Range Stock
BQ24072RGTR (this part) Tape & Reel -40degC ~ 125degC .. 21,015
BQ24072TRGTR Tape & Reel 0degC ~ 125degC (TJ) 5,836

Also Consider

BQ24075RGTR TITexas Instruments - Features a fixed 5.5V SYSOUT regulation point instead of tracking the battery voltage.
MCP73871 MCHPMicrochip Technology - An alternative power path management solution with a similar feature set in a QFN-20 package.