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Texas Instruments BQ24031RHLT — Power Management (PMIC / Gate Driver)

BQ24031RHLT – Texas Instruments Li-Ion Charger IC, 1.5 A

MPNBQ24031RHLT
Active

Texas Instruments bqTINY™ III series, BQ24031RHLT, single-cell Li-Ion/Polymer linear charger IC, 1.5 A max charge current, 16 V input, 20-VFQFN Exposed Pad package, -40°C to 125°C junction temperature range.

$5.6100Ref. price · indicative, final on quote
Texas Instruments BQ24031RHLT datasheet (PDF)
Packaging20-VFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesbqTINY™ III
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24031RHLT specifications
ParameterValue
SeriesbqTINY™ III
MountingSurface Mount
Battery pack voltage4.36V
Supply voltage16V
Current - chargingConstant - Programmable
Charge current - max1.5A
InterfaceUSB
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-VFQFN Exposed Pad
Number of cells1
Fault protectionOver Temperature, Reverse Current, Short Circuit
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Timer

Product details

1.5 A single-cell Li-Ion charger with 16 V input tolerance

The BQ24031RHLT is a linear charger IC from Texas Instruments' bqTINY™ III series, designed for single-cell Lithium-Ion or Lithium-Polymer battery packs. It delivers a programmable charge current up to 1.5 A from a USB or wall-adapter input rated to 16 V maximum, which gives headroom for 5 V or 9 V adapters without an external clamp.

Programmable current and timer with built-in fault monitoring

Charge current and safety timer are programmable via external resistors, giving the designer control over the charge profile without firmware. The IC integrates over-temperature, reverse-current, and short-circuit protection, so a single fault event won't cascade into a battery or system failure.

Frequently asked questions

Is BQ24031RHLT a direct replacement for BQ24030?

The BQ24031RHLT and BQ24030 share the same base product family (BQ2403x) and are both single-cell Li-Ion chargers in the bqTINY™ III series. The key difference is the battery pack voltage: the BQ24031RHLT regulates to 4.36 V, while the BQ24030 regulates to 4.2 V. Confirm your battery's termination voltage before substituting.

Does BQ24031RHLT have built-in overvoltage protection?

Yes, the IC includes over-temperature, reverse-current, and short-circuit fault protection. The 16 V maximum input supply rating also provides inherent overvoltage margin for 5 V USB or 9 V adapter inputs.