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
- 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
Applications
- 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
