The ADP320 is a triple, 200mA, low noise, high PSRR voltage regulator with a 2.5V to 5.5V bias voltage range and a 1.8V to 5.5V input voltage range. The maximum output current is 200mA and it features high PSRR, low noise, low dropout voltage and fast turn-on.
The ADP320 is a triple 200 mA low‑dropout voltage regulator designed for wireless and portable applications. It offers high PSRR, low output noise, and built‑in over‑current and thermal protection, all in a compact 16‑lead 3 mm × 3 mm LFCSP package.
The document provides full electrical specifications, pin descriptions, typical application circuits, thermal considerations, and PCB layout recommendations, enabling designers to integrate the regulator into battery‑powered devices while maintaining stability with 1 µF ceramic output capacitors.
| Input bias voltage range (VBIAS) | 2.5 V to 5.5 V |
|---|---|
| LDO input voltage range | 1.8 V to 5.5 V |
| Maximum output current per regulator | 200 mA |
| Output noise (typical) at VOUT = 1.2 V | 29 µV rms |
| Thermal shutdown threshold | 155 °C |
Each regulator can deliver up to 200 mA of output current.
The device is supplied in a 16‑lead 3 mm × 3 mm LFCSP package.