The product is a synchronous current-mode with constant on-time, PWM buck controller that supports 300 kHz, 600 KHz and 1.0 MHz options, supports all N-channel MOSFET power stages, and can be used in telecom and networking systems, mid to high end servers, set-top boxes, DSP core power supplies, etc.
The ADP1872 and ADP1873 are synchronous current‑mode step‑down controllers that operate from a low bias supply (2.75 V – 5.5 V) and accept input voltages up to 20 V. They provide a minimum output voltage of 0.6 V, support three switching‑frequency options (300 kHz, 600 kHz, 1.0 MHz), and are offered in a compact 10‑lead MSOP package. The ADP1873 version adds a power‑saving mode (PSM) for improved efficiency at light loads.
Typical applications include telecom and networking systems, servers, set‑top boxes, and DSP core power supplies. The datasheet includes performance graphs, pin descriptions, layout recommendations, and design examples to help engineers integrate the controller into their designs.
| Input voltage range | 2.75 V – 20 V |
|---|---|
| Bias supply voltage range | 2.75 V – 5.5 V |
| Minimum output voltage | 0.6 V |
| Operating temperature range | -40 °C – +125 °C |
| Package type | 10‑lead MSOP |
| Switching frequency options | 300 kHz, 600 kHz, 1.0 MHz |
| Power Saving Mode (PSM) | ADP1873 only |
The controller accepts an input voltage from 2.75 V up to 20 V.
Yes, the ADP1873 includes a Power Saving Mode (PSM) that reduces load current at light loads.
They are rated for junction temperatures from –40 °C to +125 °C.
Both devices are offered in a 10‑lead MSOP package.