This document is the application note of PBLS20xD and PBLS60xD low VCEsat load switches issued by NXP. This switch adopts PNP low VCEsat transistor and NPN RET in a single package, which can simplify circuit design and reduce pick-and-place cost. It uses SOT457 package, has the highest current-per-footprint rating on the market, and is ideal for switching positive supply rails or ground-referenced loads. Main applications include supply-line switches, battery-charger switches, high-side switches for LEDs, drivers, and backlights, and portable equipment.
The PBLS20xD and PBLS60xD families are low‑VCEsat load switches offered in a compact SOT457 (SC‑74) package. They combine a low‑voltage transistor with a resistor‑equipped transistor (RET) to deliver high current‑per‑footprint ratings, making them ideal for switching positive supply rails or ground‑referenced loads in portable equipment, LED drivers, and battery‑charger applications.
Key benefits include space‑saving board layout, reduced component count (one device replaces multiple parts), low threshold voltage (<1 V), AEC‑Q101 qualification, and a wide selection of resistor values for tailoring the on‑resistance. The datasheet lists detailed electrical parameters for each variant, along with package dimensions and footprint drawings.
| PBLS2021D voltage rating | 20 V |
|---|---|
| PBLS2021D continuous current | 1.84 A |
| PBLS2021D resistor R1/2 | 2.2 kΩ |
| PBLS2022D continuous current | 1.8 A |
| PBLS6023D voltage rating | 60 V |
| PBLS6023D continuous current | 1.5 A |
| Package type | SOT457 (SC‑74) |
| Package dimensions | 2.0 x 1.25 x 0.95 mm |
The PBLS20xD devices support up to 1.8 A continuous current at a 20 V rating.
Both series are supplied in a SOT457 (SC‑74) surface‑mount package.