The LTC3714 is a synchronous step-down switching regulator controller for CPU power. An output voltage between 0.6V and 1.75V is selected by a 5-bit code (Intel mobile VID specification). The controller uses a constant on-time, valley current control architecture to deliver very low duty cycles without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated by a compensation capacitor. The device offers a fast switching rate and is stable in high input voltage ranges. It also features good protection in short circuit conditions.
The LTC3714 is a synchronous step‑down switching regulator controller designed for CPU power supplies. It offers a wide input voltage range, programmable output voltage via a 5‑bit VID code, and a constant‑on‑time, valley‑current control architecture that enables low duty cycles without a sense resistor.
The datasheet details electrical characteristics, pin descriptions, typical performance curves, and layout recommendations. It also outlines fault protection features such as internal foldback current limiting and over‑voltage detection, making the device suitable for mobile and notebook power solutions.
| Input voltage range | 4 V to 36 V |
|---|---|
| Output voltage range | 0.6 V to 1.75 V |
| Maximum output current | 23 A |
| Package | 28‑lead plastic SSOP (5.3 mm) |
| Frequency setting | External resistor |
| Soft‑start | External timing capacitor |
| Fault protection | Internal foldback current limit, over‑voltage comparator |
The LTC3714 operates with an input voltage from 4 V up to 36 V.
The output voltage is programmed with a 5‑bit VID code, selectable between 0.6 V and 1.75 V according to the Intel mobile VID specification.
The device is supplied in a 28‑lead plastic SSOP package (5.3 mm wide).
The operating frequency is set by an external resistor connected to the controller.