This datasheet introduces the features and characteristics of the ADP322/ADP323 triple 200mA low noise high PSRR voltage regulators
The ADP322 and ADP323 are 200 mA triple‑output LDO voltage regulators designed for portable, battery‑powered equipment. They offer high PSRR, low output noise, and built‑in over‑current and thermal protection, making them suitable for mobile phones, digital cameras, and other wireless devices.
The datasheet details electrical specifications, pin functions, recommended capacitor values, thermal characteristics, and typical application circuits. It also includes an ordering guide, outline dimensions, and PCB layout recommendations to help designers integrate the devices into compact systems.
| Output current per regulator | 200 mA |
|---|---|
| Input voltage range (LDO) | 1.8 V to 5.5 V |
| Low dropout voltage at 200 mA | 110 mV |
| Output voltage accuracy (ADP322) | ±1 % |
| Power‑supply rejection ratio (PSRR) up to 1 kHz | 76 dB |
The typical output noise is 29 μV rms.
The devices have three independent logic‑controlled enable inputs.
They are offered in a 16‑lead, 3 mm × 3 mm LFCSP package.