The US2075 is a typical application in a flexible motherboard designed for Intel P55, P54, AMD K5, K6, as well as Cyrix M1 and M2 applications. It combines a PWM switcher controller and a 7.5A low dropout regulator, providing a total solution for dual supply processor applications.
The US2075 is a dual‑function integrated circuit that merges a PWM switching controller with a fixed 3.30 V, 7.5 A low‑dropout linear regulator. It is offered in 7‑pin T0220 (TO‑220) and TO‑263 surface‑mount packages, providing a compact solution for dual‑supply processor applications.
Key features include an internal 1.237 V reference, fast transient response (0‑100 % duty cycle in 100 ns), on‑board MOSFET driver, thermal shutdown, and under‑voltage lockout. Typical applications cover Intel P55C, AMD K6, Cyrix M2 and similar low‑voltage processors, with a programmable core supply voltage range of 2.8 V‑3.5 V.
| Fixed LDO Output Voltage | 3.30 V (typ) |
|---|
The linear regulator provides a fixed 3.30 V output (typical).
The Drv pin is the PWM output of the switching controller.