The MIC2128 is a constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2128 operates over an input voltage range from 4.5V to 75V and can be used to supply load current up to 25A (Thermally Limited)?. The output voltage is adjustable down to 0.6V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 270kHz to 800kHz.

The MIC2128 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions,?Adjustable soft-start to reduce inrush current, "hiccup" mode short-circuit protection, and thermal shutdown.

  Hyper Speed Control? architecture enables:

  4.5V to 75V input voltage

  Adjustable output voltage from 0.6V to 30V

  270kHz to 800kHz programmable switching frequency

  Externally programmable soft start

  Enable input and power good output

  Built-in 5V regulator for single-supply operation

  Auxiliary bootstrap LDO

  Internal Bootstrap diode

  Programmable current limit and "hiccup" mode short-circuit protection

  Internal compensation, and thermal shutdown

  Supports safe start-up into a pre-biased output

  -40°C to +125°C junction temperature range

  Available in 16-pin 3mm x 3mm QFN package