The ADP5043 is a Micro PMU that integrates an 800mA buck, 300mA LDO, supervisory, watchdog, and manual reset circuits. It supports 2.3V to 5.5V input voltage range. The package is a 20-lead, 4mm x 4mm LFCSP.
The ADP5043 combines a high‑performance buck regulator and a low‑dropout regulator (LDO) in a 20‑lead LFCSP package, delivering up to 800 mA buck current and 300 mA LDO current. It includes supervisory circuits, dual watchdog timers, and programmable output voltages for flexible power‑management solutions.
The document details electrical specifications, pin functions, thermal data, and recommended external components, as well as layout guidelines and evaluation‑board information to aid designers in implementing the device in portable and battery‑powered applications.
| Input voltage range (VIN1) | 2.3 V to 5.5 V |
|---|---|
| Buck regulator current | 800 mA |
| LDO regulator current | 300 mA |
| Initial regulator accuracy | ±1 % |
| Shutdown current (IGND) | 0.1 µA |
The device operates with an input voltage (VIN1) from 2.3 V to 5.5 V.
The ADP5043 includes a dual watchdog system, with Watchdog 1 and Watchdog 2.
The typical shutdown current is 0.1 µA.