Microchip MCP1642B | Demoboard ADM00460

Description

The MCP1642B/D is a compact, High-efficiency, fixed frequency, synchronous step-up DC-DC converter. These products 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 MCp1642B/D is capable of regulating the output voltage over a wide 1.8V to 5.5V range and typically can deliver over 400mA of load current at 3.3V output when supplied from a single 1.5V cell. The regulated output voltage , VOUT, should be greater than the input voltage, VIN.The devices are available in MSOP-8 and 2x3mm DFN-8 lead packages.MCP1642B/D High-Current Synchronous Boost Converter Evaluation Board offers both package types in two boost-converter applications for 3.3V and 5.0V output voltage.

Features

• Start-up voltage: 0.65V at VOUT=3.3V and IOUT=1mA, resistive load
• Input voltage range after start-up, VIN:0.35V up to VOUT-200-300 mV recommended headroom
• Adjustable output voltage range: 1.8V to 5.5V, set by a resistor divider on board (bottom application using MCP1642-ADJ)
• Fixed 3.3V output voltage (using the fixed output voltage MCP1642D-33)
• Output current: typical 200mA @ 3.3V Output, 1.2V Input or 800mA @ 5.0V Output, 3V Input
• Output Disconnect(MCP1642B)
• Input-output Bypass(MCP1642D)
• PWM Operation
• PWM Switching Frequency=1 MHz
• Enable state, Power Good, Switch test points on board
• Peak Input Current limit of 1.8A
• Over-temperature protection (if the die temperature exceeds +150 C, +35 C hysteresis)

More information

• Datasheet
• IC product information