ADM00458

ADM00458 is a MCP16251 and MCP1640B synchronous boost converters evaluation board. It is used to evaluate and demonstrate Microchip Technology’s MCP16251 and MCP1640B products. This board demonstrates the MCP16251/MCP1640B in two boost-converter applications with multiple output voltages. It can be used to evaluate both package options (SOT-23-6 and 2x3mm 8-(T)DFN). The MCP16251 and MCP1640B Synchronous Boost Converters Evaluation Board was developed to help engineers reduce the product design cycle time. Three common output voltages can be selected: 2V, 3.3V and 5V. The output voltage can be changed with a mini-dip switch that changes the external resistor divider. A switch connected to the EN pin is used to enable and disable the converters. When enabled, the MCP16251/MCP1640B will regulate the output voltage; when disabled, the MCP16251/MCP1640B disconnects the path from input to output for “true-disconnect”.

• Powered by 1-cell, 2-cell, or 3-cell alkaline, NiCd, NiMH, 1-cell Li-Ion or Li-Polymer batteries
• Input voltage range (VIN ): 0.35V to 5.5V, with VIN ≤ VOUT
• Output current: typical 125mA at 3.3V output, 1.5V input or 200mA at 5V output, 3V input
• Start-up voltage: 0.82V (for MCP16251’s converter) or 0.65V (for MCP1640B’s converter) at V
• OUT = 3.3V and IOUT= 1mA, resistive load
• Automatic PFM/PWM operation for the MCP16251- converter
• 500kHz PWM switching frequency
• Enable state, selectable using the mini-dip switch on board
• Peak input current limit (800mA for MCP1640 or 650mA for MCP16251)
• Over-temperature protection

Contents

MCP16251 and MCP1640B evaluation board (ADM00458), Important information sheet.

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

90 Day Warranty only. After Expiration of Warranty returns must be processed via Microchip.