The ADP5022 is a small, high performance, 3 MHz, 600 mA buck regulator with integrated 150 mA low dropout (LDO) regulator
The ADP5022 is a micro power‑management unit that combines two high‑performance buck regulators and a low‑dropout regulator in a tiny 16‑ball WLCSP package. It supports an input voltage range of 2.4 V to 5.5 V, offers 600 mA buck current, and provides programmable output voltages for three channels. Features include over‑current and thermal protection, soft‑start, forced PWM and auto PWM/PSM modes, and a low‑noise LDO with 60 dB PSRR up to 10 kHz.
The handbook presents the full specifications, pin configuration, typical performance curves, thermal data, absolute maximum ratings, and layout guidelines. It also includes an evaluation‑board schematic, suggested PCB layout, and an ordering guide for the ADP5022.
| Input voltage range | 2.4 V to 5.5 V |
|---|---|
| Maximum buck current | 600 mA |
| Quiescent current per channel (no switching) | 24 µA typical |
| Dropout voltage (LDO) | 150 mV @ 150 mA load |
| Power‑supply rejection ratio (PSRR) | 60 dB up to 10 kHz |
| Output noise (VOUT3 = 3.3 V) | 65 pV rms |
| Oscillator frequency | 2.5 – 3.5 MHz |
The ADP5022 operates with an input voltage from 2.4 V to 5.5 V.
Each buck regulator can deliver up to 600 mA.
The LDO dropout voltage is 150 mV at a 150 mA load.
The LDO provides a power‑supply rejection ratio of 60 dB up to 10 kHz.