MIC2164 Buck Regulator

Buck controller from Microchip with adaptive on-time control

Image of Micrel's MIC2164 Buck RegulatorMicrochip's MIC2164/-2/-3 is a synchronous, digital modified, constant on-time pulse-width modulation (PWM) buck controller family. MIC2164 is the first product in the new Hyper Speed Control™ family of buck controllers introduced by Microchip. These controllers are targeted for cost sensitive applications requiring high performance such as set-top boxes, gateways, routers, computing peripherals, and telecom/networking equipments.

The MIC2164/-2/-3 family operates over an input supply range of 3 V to 28 V, and is independent of the IC supply voltage. The MIC2164/-2/-3 family is capable of supplying 25 A output current. The MIC2164 operates at 300 kHz, the MIC2164-2 operates at 600 kHz, and the MIC2164-3 operates at 1 MHz.


  • Hyper Speed Control™ architecture enables
  • 3 V to 28 V input voltage
  • 25 A output current capability
  • 300 kHz/600 kHz/1 MHz switching frequency
  • Constant on-time mode control
  • Output down to 0.8 V with ±1% FB accuracy
  • Up to 95% efficiency
  • Foldback current limit and "hiccup" mode short-circuit protection
  • All N-Channel MOSFET design
  • No current-sense resistor needed

MIC2164 Buck Regulator

ImageManufacturer Part NumberDescriptionOutput TypeFunctionAvailable Quantity
MIC2164YMM datasheet linkIC REG CTRLR BUCK 10MSOPMIC2164YMMIC REG CTRLR BUCK 10MSOPTransistor DriverStep-Down136 - Immediate
MIC2164YMM product page link
Published: 2012-06-29