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Texas Instruments BQ24120RHLR — Power Management (PMIC / Gate Driver)

BQ24120RHLR Li-Ion Charger, bqSWITCHER, 2A Max, 20-VQFN

MPNBQ24120RHLR
Active

Texas Instruments bqSWITCHER™ series, BQ24120RHLR, single-cell Lithium Ion/Polymer battery charger, 2A max charge current, 16V supply max, constant-current programmable, -40°C to 85°C operating temperature, 20-VFQFN Exposed Pad package.

$5.5600Ref. price · indicative, final on quote
Texas Instruments BQ24120RHLR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24120RHLR specifications
ParameterValue
SeriesbqSWITCHER™
MountingSurface Mount
Battery pack voltage4.2V
Supply voltage16V
Current - chargingConstant - Programmable
Charge current - max2A
Operating temperature-40°C~85°C(TA)
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

2A single-cell Li-ion charger with 16V input ceiling

The constant-current charge profile is programmable via external resistors, and the termination voltage is fixed at 4.2V per cell — the standard for 1S Li-ion and Li-polymer packs.

Charge current and input voltage — sizing the power path

With a 16V absolute maximum input, the charger accepts 5V USB, 9V/12V wall adapters, or unregulated 12V rails without an external buck pre-regulator — useful in automotive and industrial designs where the input bus is not tightly regulated.

Package and footprint — reflow and placement notes

The 20-VFQFN with exposed pad (3.5x4.5 mm body) requires a solder-paste stencil aperture covering 50–70% of the pad area to avoid voiding and tombstoning. The MSL rating should be verified before the bake decision.

Frequently asked questions

Is BQ24120RHLR a direct replacement for BQ24120RHL?

The base product number is BQ24120, and the suffix RHLR vs RHL indicates the packaging option (Tape & Reel vs Tube/Tray). The die and electrical specifications are identical — the RHLR variant is the tape-and-reel version for automated assembly lines.

Can BQ24120RHLR be used in a 2-cell battery charger design?

No — the BQ24120RHLR is designed for single-cell (1S) Li-ion/Polymer packs with a fixed 4.2V termination voltage. A 2-cell design requires a charger with a higher cell count and a different termination voltage.