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.

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