This document describes the features and characteristics of ADP2119/ADP2120 synchronous step-down DC-to-DC regulators, including continuous output current, integrated MOSFETs, input voltage range, output voltage range, output accuracy, fixed switching frequency, synchronizable frequency range, operating modes, and power management functions.
This datasheet describes the ADP2119 and ADP2120 synchronous step‑down DC‑DC regulators, covering their continuous‑mode and pulse‑frequency‑modulation operation, input voltage range, output current capability, and integrated protection functions. It includes typical application circuits, pin descriptions, and performance graphs.
The document also lists ordering information, package dimensions, thermal resistance data, and absolute maximum ratings, helping designers select the appropriate part and design supporting components such as inductors and capacitors.
| Continuous output current (ADP2119) | 2 A |
|---|---|
| Switching frequency | 1.02 MHz – 1.38 MHz (typ. 1.2 MHz) |
The ADP2119 can deliver up to 2 A of continuous output current.
They include undervoltage lockout (UVLO), over‑voltage protection (OVP), over‑current protection (OCP), and thermal shutdown.
By connecting a 1 MHz‑2 MHz external clock to the SYNC/MODE pin.