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Texas Instruments BQ24073RGTTG4 — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24073RGTTG4 Li-Ion Battery Charger IC, 1.5A, USB, 16-VQFN

MPNBQ24073RGTTG4
End of Life

Texas Instruments BQ24073RGTTG4, single-cell Li-Ion battery charger IC, USB interface, 1.5A max charge current, programmable current and timer, 16-VQFN (3x3) package, -40°C to 125°C operating junction temperature.

$3.6500Ref. price · indicative, final on quote
BQ24073RGTTG4 datasheet
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MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
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  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

BQ24073RGTTG4 Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage4.2V
Voltage6.4V
Current - chargingConstant - Programmable
Charge current - max1.5A
InterfaceUSB
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR)
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 1.5 A ceiling

The BQ24073RGTTG4 from Texas Instruments is a linear single-cell Li-Ion battery charger IC designed to draw power from a USB port. It delivers a programmable constant charge current up to 1.5 A, with the charge voltage regulated to 4.2 V for the battery pack. The device integrates fault protection against over-temperature, over-voltage, reverse current, and short circuit, reducing the need for external monitoring components.

Charge current and thermal budget at 1.5 A

At the 1.5 A maximum charge current, the linear regulator dissipates power as heat equal to (VIN - VBAT) × ICHG. The programmable timer and current features let the designer set the charge profile without external resistors on the ISET pin — a single resistor from the ISET pin to GND sets the charge current, and the timer pin sets the safety timeout.

The 16-VFQFN exposed-pad package requires a thermal pad on the PCB for proper heat sinking.

Frequently asked questions

What is the maximum charge current for BQ24073RGTTG4?

The maximum charge current is 1.5 A, programmable via an external resistor on the ISET pin.

Is BQ24073RGTTG4 compatible with 4.2V Li-ion batteries?

Yes, the battery pack voltage is regulated to 4.2 V, matching standard single-cell Li-ion and Li-polymer cells.

What is the exact function of BQ24073RGTTG4?

It is a single-cell Li-Ion battery charger IC with a USB interface, providing constant-current / constant-voltage charging up to 1.5 A with programmable current and timer, plus comprehensive fault protection.