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Texas Instruments BQ24079TRGTR — Power Management (PMIC / Gate Driver)

BQ24079TRGTR Li-Ion Battery Charger IC, 1.5A Max, USB

MPNBQ24079TRGTR
Active

Texas Instruments BQ24079TRGTR, single-cell Li-Ion battery charger IC, USB interface, 1.5A maximum charge current, programmable constant current and timer, 16-VFQFN exposed pad package, 0°C to 125°C junction temperature.

$3.6500Ref. price · indicative, final on quote
Texas Instruments BQ24079TRGTR datasheet (PDF)
Packaging16-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24079TRGTR specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.1V
Voltage6.4V
Current - chargingConstant - Programmable
Charge current - max1.5A
InterfaceUSB
Operating temperature0°C~125°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Case16-VFQFN Exposed Pad
Number of cells1
Fault protectionOver Temperature, Over Voltage, Reverse Current, Short Circuit
Battery chemistryLithium Ion
Programmable featuresCurrent, Timer

Product details

Single-cell Li-Ion charger with USB input and 1.5A ceiling

Charge current and programmable features — sizing the BOM

The 1.5A maximum charge current sets the thermal design target: at full current the 16-VQFN exposed pad must be soldered to a sufficient copper area to keep junction temperature within the 0°C to 125°C operating range. The charge current is constant and programmable, meaning an external resistor sets the rate — the BOM should include the sense resistor and a programming resistor, both 1% tolerance for repeatability. The timer is also programmable, which allows setting a safety timeout for charge termination independent of the current taper.

Package and thermal — layout consideration

The exposed pad (3x3 mm) is the primary thermal path. The layout must stitch vias from the pad to an inner ground plane to spread heat; without that, junction temperature rises quickly above 1A continuous charge.

The BQ24079TRGTR is an active product per TI's lifecycle status. It is ROHS3 compliant.

Frequently asked questions

What is the maximum charge current of BQ24079TRGTR?

The maximum charge current is 1.5A. The charge current is constant and programmable via an external resistor, so the actual rate is set below that ceiling by the BOM resistor value.

Does BQ24079TRGTR include power path management?

The evidence does not explicitly state integrated power path management. It lists fault protections (over-temperature, over-voltage, reverse current, short circuit) and programmable current and timer, but a dedicated power-path FET or system-load prioritization is not confirmed in the available specifications.

What is the typical application for BQ24079TRGTR?

It is a single-cell Li-Ion charger with USB input, suited for portable electronics, handheld instruments, and battery-powered IoT devices that charge from a USB port. The 1.5A ceiling supports mid-capacity cells (1000–3000 mAh range) with reasonable charge times.