1.2 A charge current for single-cell Li-Ion designs
The Texas Instruments BQ24002PWPG4 is a linear battery charger IC designed for single-cell Lithium Ion packs, delivering a constant-current charge up to 1.2 A max. That 1.2 A ceiling sets the practical charge rate for a 1000–1500 mAh cell in a handheld or portable device — fast enough for a reasonable charge cycle without pushing the thermal limits of the 20-HTSSOP package. The charger operates from a supply up to 10 V max and integrates over-temperature fault protection, which shuts down the pass element if the die temperature exceeds the safe threshold. The programmable features — charge current and charge timer — let the designer set the termination point and a safety timeout via external resistors, no I²C bus required.
Package and thermal: 20-HTSSOP
The BQ24002PWPG4 comes in a 20-PowerTSSOP (0.173-inch width, 4.40 mm body) with an exposed thermal pad on the bottom — the 20-HTSSOP supplier device package. At 1.2 A charge current and a typical input-to-battery dropout of a few hundred millivolts, the power dissipation can reach 0.5–0.8 W, so the PCB copper area under the pad sets the junction temperature. The listed shipping medium is Tube. No reel or tape quantity is specified — expect the standard TI tube count for this package (typically 50 or 75 units per tube, but confirm at quote).
The base product number is BQ24002, so pin-compatible variants (e.g. BQ24003) may share the same footprint but differ in charge current or feature set — verify the full order code before substituting.