Microchip MCP1642B-ADJI/MS, Boost Converter, Step Up 800mA Adjustable, 1.15 MHz 8-Pin, MSOP

The MCP1642 family of devices from Microchip are compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC converters. These regulators are designed for applications powered by alkaline, NiCd, NiMH, Li-Ion or Li-Polymer batteries.

Up to 96% Typical Efficiency
1.8A Typical Peak Input Current Limit
I_OUT > 175 mA @ 1.2V V_IN, 3.3V V_OUT
I_OUT > 600 mA @ 2.4V V_IN, 3.3V V_OUT
I_OUT > 800 mA @ 3.3V V_IN, 5.0V V_OUT
I_OUT > 1A @ V_IN > 3.6V, 5.0V V_OUT
Low Start-up Voltage: 0.65V
Minimum Operating Input Voltage: 0.35V
Maximum Input Voltage < V_OUT < 5.5V
Adjustable Output Voltage Range: 1.8V to 5.5V
PWM Operation at 1 MHz
Shutdown Current (All States): < 1 μA
Internal Synchronous Rectifier
Internal Compensation
Inrush Current Limiting and Internal Soft-Start
True Load Disconnect Shutdown (MCP1642B)
Input-to-Output Bypass Option (MCP1642D)
Low Noise, Anti-Ringing Control
Over-temperature Protection