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Microchip MCP16301

High-Voltage Input Integrated Switch Step-Down Regulator


TopologyBuck Converter
Input voltage4.7-36 V
Output 13.3 V / 0.6 A
IC revisionA


The MCP16301/H devices are highly integrated,high-efficiency, fixed-frequency, step-down DC-DC converters in a popular 6-pin SOT-23 package that operates from input voltage sources up to 36V. Integrated features include a high-side switch,fixed-frequency Peak Current Mode Control, internal compensation, peak current limit and overtemperature protection. Minimal external components are necessary to develop a complete step-down DC-DC converter power supply.

High converter efficiency is achieved by integrating the current-limited, low-resistance, high-speed N-Channel MOSFET and associated drive circuitry. High switching frequency minimizes the size of externalfiltering components, resulting in a small solution size.

The MCP16301/H devices can supply 600 mA of continuous current while regulating the output voltage from 2.0V to 15V. An integrated, high-performance peak current mode architecture keeps the outputvoltage tightly regulated, even during input voltage steps and output current transient conditions that are common in power systems.

The EN input is used to turn the device on and off. While turned off, only a few micro amps of current are consumed from the input for power shedding and load distribution applications.

Output voltage is set with an external resistor divider. The MCP16301/H devices are offered in a space-saving SOT-23-6 surface mount package.


  • Up to 96% Typical Efficiency
  • Input Voltage Range:
  • 4.0V to 30V (MCP16301)
  • 4.7V to 36V (MCP16301H)
  • Output Voltage Range: 2.0V to 15V
  • 2% Output Voltage Accuracy
  • Integrated N-Channel Buck Switch: 460 m
  • 600 mA Output Current
  • 500 kHz Fixed Frequency
  • Adjustable Output Voltage
  • Low Device Shutdown Current
  • Peak Current Mode Control
  • Internal Compensation
  • Stable with Ceramic Capacitors
  • Internal Soft-Start
  • Cycle-by-Cycle Peak Current Limit
  • Undervoltage Lockout (UVLO): 3.5V
  • Overtemperature Protection
  • Available Package: SOT-23-6

Typical applications

  • DSL Cable Modems
  • SLA Battery-Powered Devices
  • D2 Package Linear Regulator Replacement
  • Power Meters
  • AC-DC Digital Control Power Source
  • Consumer
  • Set-Top Boxes
  • Automotive
  • PIC® /dsPIC® Microcontroller Bias Supply
  • Power Meters
  • Distributed Power Supplies
  • 24V Industrial Input DC-DC Conversion
  • Wall Cube Regulation
  • Medical and Health Care

More information


Order Code Data­sheet Downloads Product seriesL
RDC typ.
Mount Samples
9 files WE-TPC SMT Tiny Power Inductor 15 0.72 0.9 356 32 SMT
9 files WE-TPC SMT Tiny Power Inductor 15 0.62 0.45 255 30 SMT
9 files WE-TPC SMT Tiny Power Inductor 15 1.03 0.75 190 35 SMT
Order Code Data­sheet Downloads Product seriesL
RDC typ.
Mount Samples