The MCP1663 device is a compact, high-efficiency, fixed-frequency, non-synchronous step-up DC-DCconverter which integrates a 36V, 400 mΩ NMOS switch. It provides a space-efficient high-voltage step-up power supply solution for applications powered by either two-cell or three-cell alkaline, Lithium, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries.

• Up to 92% Efficiency
• High Output Voltage Range: up to 32V
• 1.8A Peak Input Current Limit:
  • IOUT> 375 mA @ 5.0V VIN, 12V VOUT
  • IOUT> 200 mA @ 3.3V VIN, 12V VOUT
  • IOUT> 150 mA @ 4.2V VIN, 24V VOUT
• Input Voltage Range: 2.4V to 5.5V
• Undervoltage Lockout (UVLO):
  • UVLO@VIN Rising:  2.3V, typical
  • UVLO@VIN Falling: 1.85, typical
• No Load Input Current: 250 µA, typical
• Sleep mode with 200 nA Typical Quiescent Current
• PWM Operation with Skip mode: 500 kHz
• Feedback Voltage Reference: VFB= 1.227V
• Cycle-by-Cycle Current Limiting
• Internal Compensation
• Inrush Current Limiting and Internal Soft-Start
• Output Overvoltage Protection (OVP) in the event of:
  • Feedback pin shorted to GND
  • Disconnected feedback divider
• Overtemperature Protection
• Easily Configurable for SEPIC or Flyback Topologies
• Available Packages: 5-Lead SOT-23 or 2x3 8-Lead TDFN