MCP1640
Up to 96% Typical Efficiency
• 800 mA Typical Peak Input Current Limit:
-IOUT › 100 mA @ 1.2V VIN, 3.3V V
OUT
-IOUT › 350 mA @ 2.4V VIN, 3.3V V
OUT
-IOUT› 350 mA @ 3.3V VIN,5.0V VOUT
• Low Start-up Voltage: 0.65V, typical 3.3V V
OUT
@ 1 mA
• Low Operating Input Voltage: 0.35V, typical
3.3VOUT@ 1 mA
• Adjustable Output Voltage Range: 2.0V to 5.5V
• Maximum Input Voltage VOUT‹ 5.5V
• Automatic PFM/PWM Operation (MCP1640/C):
- PFM Operation Disabled (MCP1640B/D)
- PWM Operation: 500 kHz
• Low Device Quiescent Current: 19 µA, typical
PFM Mode
• Internal Synchronous Rectifier
• Internal Compensation
• Inrush Current Limiting and Internal Soft-Start
• Selectable, Logic Controlled, Shutdown States:
- True Load Disconnect Option (MCP1640/B)
- Input to Output Bypass Option (MCP1640C/D)
• Shutdown Current (All States): ‹ 1 µA
• Low Noise, Anti-Ringing Control
• Overtemperature Protection
• Available Packages:
-SOT23-6
- 2x3 8-Lead DFN