MIC2166 Datasheet | Micrel Semiconductor

Adaptive On-Time DC-DC Controller Hyper Speed Control™ Family General Description The Micrel MIC2166 is a synchronous adaptive on-time buck controller targeting high-performance, cost-sensitive applications such as set-top boxes, gateways, routers, puting peripherals, and tele/networking equipment. The MIC2166 operates over a supply range of 4.5V to 28V. It has an internal linear regulator which provides a regulated 5V supply to power the internal control circuitry. MIC2166 operates at a constant 600k Hz switching frequency and can be used to drive up to 25A of output current. The output voltage is adjustable from 0.8V to 5.5V. A unique Hyper Speed Control™ architecture enables ultra-fast transient response while reducing the output capacitance and also makes High VIN/Low VOUT operation possible. A UVLO feature is provided to ensure proper operation under power-sag conditions to prevent the external power MOSFET from over heating. Also, a soft-start feature is...