ADP220/ADP221 is a dual, 200 mA, low noise, high PSRR voltage regulator. It features wide input voltage range, high stability, low output noise, overcurrent and thermal protection, etc.
The ADP220 and ADP221 are dual, 200 mA low‑noise, low‑dropout voltage regulators designed for portable, battery‑powered equipment such as mobile phones, digital cameras, and medical devices. They offer high power‑supply rejection (up to 76 dB at 1 kHz), low output noise, and active pull‑down (ADP221) for fast discharge of loads.
The document provides a complete set of specifications, pin descriptions, typical application circuits, thermal data, and recommended capacitor selections. It also includes revision history, absolute maximum ratings, and performance graphs to aid designers in implementing the regulators in space‑constrained, high‑performance applications.
| Input voltage range | 2.5 V to 5.5 V |
|---|---|
| Dropout voltage (200 mA load) | 150 mV |
| Power‑supply rejection ratio (PSRR) at 1 kHz | 76 dB |
| Active pull‑down (ADP221) | Included |
The regulators operate with an input voltage from 2.5 V up to 5.5 V.
The dropout voltage is 150 mV when delivering 200 mA.
Yes, the ADP221 has an active pull‑down to quickly discharge output loads.