ADP1829 is a dual, interleaved, step-down DC-DC controller with tracking capability. It features fixed frequency operation, wide input voltage range, all-N-channel MOSFET design, soft start, thermal overload, and current-limit protection.
The ADP1829 is a versatile dual‑channel, interleaved synchronous buck controller that generates two independent output rails from an input of 3.0 V to 20 V (wide power‑stage range 1 V‑24 V). It offers fixed‑frequency operation at 300 kHz or 600 kHz and can be synchronized up to 1 MHz. Integrated features include a linear regulator, soft‑start, thermal overload, current‑limit and reverse‑current protection, as well as independent Power‑OK outputs and voltage‑tracking for sequencing or DDR termination.
Typical applications listed are telecommunications and networking systems, medical imaging, base‑station power, set‑top boxes, printers and DDR termination. The device is supplied in a 5 mm × 5 mm, 32‑lead LFCSP package and is rated for operation from –40 °C to +125 °C.
| Supply input voltage range | 3.0 V to 20 V |
|---|---|
| Power‑stage input voltage range | 1 V to 24 V |
| Fixed switching frequency options | 300 kHz, 600 kHz, or up to 1 MHz synchronized |
| Quiescent current (no switching) | Typical 3 mA |
| Shutdown current | Typical 10 µA |
| Internal linear regulator output voltage | Typical 5.0 V |
| Package | 5 mm × 5 mm, 32‑lead LFCSP |
The controller operates with a supply input range of 3.0 V to 20 V, and the power‑stage can accept 1 V to 24 V.
Fixed frequencies of 300 kHz or 600 kHz are selectable, and the device can be synchronized for operation up to 1 MHz.
The ADP1829 provides soft‑start, thermal overload, current‑limit protection, and reverse‑current protection during soft‑start.
It is offered in a 5 mm × 5 mm, 32‑lead Lead‑Frame Chip Scale Package (LFCSP).