Microchip Technology MCP1623
Low-Voltage Input Boost Regulator
FEATURES
● Up to 96% Typical Efficiency● 425 mA Typical Peak Input Current Limit: - IOUT > 50 mA @ 1.2V VIN, 3.3V VOUT - IOUT > 175 mA @ 2.4V VIN, 3.3V VOUT - IOUT > 175 mA @ 3.3V VIN, 5.0V VOUT
● Low Start-Up Voltage: 0.65V, 3.3V VOUT @ 1 mA (typical)
● 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 (MCP1624)
● PWM-Only Operation (MCP1623)
● 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
● True Load Disconnect
● Shutdown Current (All States): <1 µA
● Low Noise, Anti-Ringing Control
● Overtemperature Protection
● Available Packages: - 6-Lead SOT-23 - 8-Lead 2 x 3 DFN
APPLICATIONS
● One, Two and Three-Cell Alkaline and NiMH/NiCd Low-Power PIC® MicrocontrollerAPPLICATIONS
GENERAL DESCRIPTION
The MCP1623/24 is a compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC converter.