The ADP1823 is a dual channel, interleaved, step-down DC-to-DC controller with tracking function.
The ADP1823 is a versatile dual, interleaved, synchronous PWM buck controller that provides two independent output rails from an input of 3.7 V to 20 V (wide power‑stage range 1 V‑24 V). Each channel can be set to output 0.6 V‑85 % of the input voltage and operates 180° out of phase, reducing input‑capacitor stress and allowing smaller, low‑cost components.
Typical applications include telecommunications, networking, medical imaging, base‑station power, set‑top boxes, printers and DDR termination. The device offers soft‑start, thermal overload, current‑limit, reverse‑current protection, independent Power‑OK outputs and voltage‑tracking for sequencing or DDR termination. It is supplied in a 5 mm × 5 mm 32‑lead LFCSP package.
| Supply input voltage range | 3.7 V to 20 V |
|---|---|
| Switching frequency options | 300 kHz, 600 kHz, or synchronized up to 1 MHz |
| Shutdown supply current | 10 pA |
| Output voltage accuracy | +0.85 % (0 °C‑70 °C) |
| Package | 5 mm × 5 mm, 32‑lead LFCSP |
The controller accepts an input voltage from 3.7 V up to 20 V (wide power‑stage range 1 V‑24 V).
It can operate at a fixed 300 kHz or 600 kHz, and can be synchronized to an external clock for frequencies up to 1 MHz.
The device includes soft‑start, thermal overload, current‑limit protection, reverse‑current protection during soft‑start, and independent Power‑OK outputs.
It is supplied in a 5 mm × 5 mm 32‑lead LFCSP package.