MCP1640EV-SBC(2): Boost 3.3V or 5V, 0.35 ~ 5.5Vin

Summary

* Output current is dependent on input voltage.

The MCP1640 is a compact, high-efficiency, fixed frequency, synchronous step-up dc-dc converter. It provides an easy-to-use power supply solution for applications powered by one-cell, two-cell, or three-cell alkaline, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries in addition to distributed 3.3V to 5.0V applications.

The MCP1640 is capable of regulating the output voltage over a wide 2.0V to 5.5V range and typically can deliver over 100 mA of load current at 3.3V output when supplied from a single 1.2V cell. The input voltage range is 0.35V to 5.5V with a low 0.65V start-up voltage. The regulated output voltage, Vout should be greater than or equal to the input voltage, Vin.

The MCP1640 Evaluation Board offers both package types in two boost-converter applications for 2.0V, 3.3V and 5.0V output voltage options that can be selected using a mini dip switch. The enable input is controlled in both boost converter applications using a mini dip switch.

Specifications

Manufacturer	Microchip Technology
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	MCP1640EV-SBC-ND
Eval Board Supplier	Microchip Technology
Eval Board	Normally In Stock
Topology	Step Up
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	3.3 V 5 V
Current Out	100 mA 300 mA
Voltage In	0.35 ~ 5.5 V
Efficiency @ Conditions	>87%, 2.5V in, 5V @ 2 ~ 300 mA >80%, 2.5V in, 3.3V @ 0.3 ~ 330 mA >72%, 1.2V in, 5V @ 1 ~ 100 mA >70%, 0.8V in, 3.3V @ 1 ~ 60 mA
Voltage Out Range	2 ~ 5.5 V
Features	Current Limit (Adj. or Fixed) Shutdown, Enable, Standby Thermal Protection
Switching Frequency	500 kHz
Standby Current [Typical]	700 nA
Quiescent Current [Typical]	220 µA
Component Count + Extras	9 + 4
Internal Switch	Yes
Design Author	Microchip Technology
Application / Target Market	Audio: MP3 Players Portable Devices RF: BlueTooth Headsets
Standby Current [Maximum]	2.3 µA
Quiescent Current [Maximum]
Main I.C. Base Part	MCP1640
Date Created By Author
Date Added To Library	2011-03