The SPX29302A is a 3A, highly accurate voltage regulator with a low drop out voltage of 370mV (typical) @ 3A. These regulators are specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. Fault protection features include over-current, reverse battery, and positive and negative voltage transients. On-Chip trimming adjusts the reference voltage to 1% initial accuracy. The SPX29302A is offered in 5-pin TO-220 & TO-263 packages.
The SPX29302A is a 3 A high‑current, low‑dropout voltage regulator offering adjustable output from 1.25 V to 16 V with 1 % accuracy. It features fast transient response, reverse‑battery protection, zero‑current shutdown (5‑pin version) and is supplied in standard TO‑220 and TO‑263 packages.
Typical applications include powering VGA and sound cards, PowerPC supplies, SMPS post‑regulators, high‑efficiency computer systems, linear power supplies, constant‑current regulators, battery chargers and other adjustable power supplies. The datasheet provides electrical characteristics, thermal considerations, pinout diagrams, and ordering information.
| Output Current | 3 A |
|---|---|
| Low Dropout Voltage | 370 mV @ 3 A |
| Output Accuracy | 1 % |
| Adjustable Output Range | 1.25 V – 16 V |
| Enable Pin Current (active) | ~20 µA |
| Package Types | 5‑pin TO‑220 and TO‑263 |
The regulator can deliver up to 3 A of output current.
The dropout voltage is 370 mV when delivering 3 A.
It is offered in 5‑pin TO‑220 and 5‑pin TO‑263 packages.
Approximately 20 µA flows through the enable pin.