The ADP1823 is a dual, interleaved, step-down DC-to-DC controller with tracking function from Analog Devices.
The ADP1823 is a dual, interleaved, synchronous PWM buck controller that generates two independent output rails from an input of 3.7 V to 20 V, with a wide power‑stage input range of 1 V to 24 V. It offers fixed‑frequency operation at 300 kHz or 600 kHz, optional synchronization up to 1 MHz, and features such as soft‑start, thermal overload, current‑limit and reverse‑current protection.
This handbook provides the full specifications, absolute maximum ratings, functional block diagram, pin configuration and descriptions, typical performance characteristics, theory of operation, and layout guidelines. It also includes typical application circuits, tracking options for DDR termination, and ordering information for the 5 mm × 5 mm, 32‑lead LFCSP package.
| Input Voltage Range (with internal regulator) | 5.5‑20 V |
|---|---|
| Quiescent Current (no load) | 3 mA typical |
| Shutdown Current | 10‑20 µA |
| Oscillator Frequency (300 kHz option) | 300 kHz typical |
| Maximum Duty Cycle | 85‑90 % |
The ADP1823 operates from 3.7 V to 20 V, and with the internal regulator the range is 5.5 V to 20 V.
Yes, the device provides voltage tracking inputs that can be used for sequencing or DDR termination.
It includes soft‑start, thermal overload, current‑limit protection, and reverse‑current protection during soft start.
The ADP1823 is offered in a 5 mm × 5 mm, 32‑lead LFCSP package.