MCP1632x Synchronous Buck Regulators



Microchip's highly integrated, fixed frequency, synchronous step-down DC-DC converters


Microchip MCP1632x Synchronous Buck Regulators Microchip's MCP16321/2/3 highly integrated, high-efficiency, fixed frequency, synchronous step-down DC-DC converters are available in a 16-pin QFN package which operates from input voltages up to 18 V (MCP16323) and 24 V (MCP16321/2). Integrated features include a high-side and low-side N-Channel switch, fixed frequency Peak Current Mode Control, internal compensation, peak current limit, VOUT overvoltage protection, and over-temperature protection. Minimal external components are necessary to develop a complete synchronous, step-down DC-DC converter power supply.

Features Applications
  • Up to 95% typical efficiency
  • Input voltage range: 6.0 V to 24 V
  • Output currents: 1 A (MCP16321), 2 A (MCP16322), 3 A (MCP16323)
  • Fixed output voltages: 0.9 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V, with 2% output voltage accuracy
  • Adjustable-version output voltage range: 0.9 V to 5 V with 1.5% reference voltage accuracy
  • Integrated N-channel high-side switch: 180 mΩ
  • Integrated N-channel low-side switch: 120 mΩ
  • 1 MHz fixed frequency
  • Peak current mode control
  • PIC® /dsPIC® microcontroller bias supply
  • 12 V, industrial-input DC-DC conversion
  • Set-top boxes
  • DSL cable modems
  • Automotive
  • Wall cube regulation
  • SLA battery powered devices
  • AC-DC digital control power source
  • Power meters
  • Consumer
  • Medical and health care
  • Distributed power supplies

Silicon
MCP16321 Series MCP16322 Series MCP16323 Series
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Evaluation Modules
Digi-Key
Part Number
Microchip
Part Number
Description  
ADM00414-ND ADM00414 BOARD EVALUATION MCP16321 ADM00414 User's Guide
ADM00423-ND ADM00423 BOARD EVALUATION MCP16322 ADM00423 User's Guide
ADM00427-ND ADM00427 BOARD EVALUATION MCP16323 ADM00427 User's Guide