MCP1640BT-I/CHY [Microchip]

The MCP1640/40B/40C/40D is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. It provides an easy-to-use power supply solution for applications powered by either one-cell, two-cell, or three-cell alkaline, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries. The MCP1640/40B/40C/40D provides very high efficiency through integration of the low resistance N-Channel Boost switch and synchronous P-Channel switch.

• Up to 96% Typical Efficiency
• IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT
• IOUT > 350 mA @ 2.4V VIN, 3.3V VOUT
• IOUT > 350 mA @ 3.3V VIN, 5.0V VOUT
• Low Start-up Voltage: 0.65V
• Operating Input Voltage: 0.35V
• Adjustable Output Voltage Range: 2.0V to 5.5V
• Maximum Input Voltage < VOUT < 5.5V
• Automatic PFM/PWM Operation
• PWM Operation at 500 kHz
• Low Device Quiescent Current: 19 µA – typical PFM Mode
• Shutdown Current (All States): < 1 µA
• Internal Synchronous Rectifier
• Internal Compensation
• Inrush Current Limiting and Internal Soft-Start
• True Load Disconnect Shutdown
• Low Noise, Anti-Ringing Control
• Over-temperature Protection
• SOT23-6 or 2x3 8-Lead DFN packages