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Texas Instruments BQ25012RHLR — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ25012RHLR Texas Instruments 1-Cell Li-Ion Charger, USB

MPNBQ25012RHLR
Active

Texas Instruments BQ25012RHLR, 1-cell Li-Ion/Polymer linear charger IC, USB interface, 500 mA max charge current, programmable current and timer, over-temperature protection, 20-VFQFN exposed pad, -40°C to 125°C.

$4.9860Ref. price · indicative, final on quote
BQ25012RHLR datasheet
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Specifications

BQ25012RHLR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage4.2V
Voltage6.5V
Current - chargingConstant - Programmable
Charge current - max500mA
InterfaceUSB
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-VFQFN Exposed Pad
Number of cells1
Fault protectionOver Temperature
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Timer

Product details

The BQ25012RHLR is a 1-cell Li-Ion/Polymer linear charger IC from Texas Instruments. Its 500 mA max charge current sets the charge-rate ceiling for the battery. The USB interface means the part can draw power directly from a USB host or wall adapter without an external DC-DC stage — the 6.5 V supply max covers the 5 V USB bus with margin.

Programmable features and protection

Charge current and charge timer are programmable via external components, giving the designer control over the charge profile without an I2C bus. The constant-current constant-voltage algorithm terminates at 4.2 V battery pack voltage. Fault protection includes over-temperature shutdown, and the junction is rated to 125°C — useful when the charger sits near a processor or power amplifier in a sealed enclosure.

Package and footprint

Housed in a 20-VFQFN exposed-pad package (3.5x4.5 mm body), the part requires a thermal pad on the PCB to dissipate heat from the linear pass element.

Frequently asked questions

Does BQ25012RHLR support USB input?

Yes, the interface is USB. The part can be powered from a USB bus up to 6.5 V, covering the 5 V nominal USB supply with margin.

What is the maximum charge current of BQ25012RHLR?

The maximum charge current is 500 mA, programmable via an external resistor. This sets the charge rate for a 1-cell Li-Ion or Li-Polymer battery.