Skip to main content
Log in
Texas Instruments BQ24002RGWR — Power Management (PMIC / Gate Driver)

TI BQ24002RGWR Li-Ion Battery Charger IC, 1.2 A Max Charge

MPNBQ24002RGWR
Active

Texas Instruments BQ24002RGWR single-cell Li-Ion linear charger IC, 1.2 A max charge current, constant-current charging, programmable current and timer, over-temperature protection, 20-VQFN exposed pad package, -40°C to 70°C operating range.

$5.3280Ref. price · indicative, final on quote
Texas Instruments BQ24002RGWR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24002RGWR specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.2V
Supply voltage10V
Current - chargingConstant
Charge current - max1.2A
Operating temperature-40°C~70°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-VQFN Exposed Pad
Number of cells1
Fault protectionOver Temperature
Battery chemistryLithium Ion
Programmable featuresCurrent, Timer

Product details

Single-cell Li-Ion linear charger with programmable current and timer

The Texas Instruments BQ24002RGWR is a linear battery charger IC designed for single-cell Lithium Ion packs. It delivers a constant charge current programmable up to 1.2 A maximum, with a regulated battery voltage of 4.2 V. Built-in over-temperature fault protection guards the die against thermal runaway during high-current charging or elevated ambient conditions. The device operates over a -40°C to 70°C ambient temperature range, suiting it for portable consumer, medical, and industrial handheld equipment where the charger shares the board with the application processor.

Charge current and thermal budget

At the 1.2 A maximum charge current, the linear regulator dissipates power as (VIN - VBAT) × ICHG. The programmable timer and current set resistor allow the designer to trade charge time against thermal budget. A lower current setting reduces dissipation and lets the part run in a smaller enclosure.

Supplied in a 20-VQFN Exposed Pad package (5x5 mm body), the BQ24002RGWR is surface-mount only.

Frequently asked questions

Is BQ24002RGWR compatible with 3.7 V lithium polymer batteries?

Yes. The BQ24002RGWR charges to a regulated 4.2 V battery voltage, which is the standard full-charge voltage for a 3.7 V nominal Li-Po cell. The constant-current charging profile and programmable timer suit both Li-Ion and Li-Po chemistries.

Does BQ24002RGWR have built-in thermal regulation?

Yes, the part includes over-temperature fault protection that shuts down charging if the die temperature exceeds the safe operating limit. This is a thermal shutdown, not a foldback current limit — the charger stops until the die cools.

What is the maximum charge current of BQ24002RGWR?

The maximum charge current is 1.2 A, set by an external resistor. The charger operates in constant-current mode until the battery reaches 4.2 V, then terminates.