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Microchip dc/dc converter ICs allow inductor-less design

Posted: 08 Jan 2003 ?? ?Print Version ?Bookmark and Share

Keywords:microchip technology? mcp1252? mcp1253? dc converter ic? ldo regulator?

Microchip Technology has announced the release of the MCP1252 and MCP1253 120mA regulated charge pump dc/dc converters that are packaged in 8-pin MSOPs and eliminate the need for inductors, providing space savings in portable, battery-powered applications.

The MCP1252 operates at 650kHz, while the MCP1253 operates at 1MHz. Both accept an input from 2.7V to 5.5V and provide either a fixed 3.3V or 5V output or an adjustable output of 1.5V to 5.5V. They also have a drain current of 60?A, shutdown current of 0.1?A, and are specified for operation over the -40C to 85C temperature range.

The devices offer a power-good output that can detect an out-of-regulation situation with a maximum output voltage accuracy of 2.5 percent. In addition, unlike LDO regulators, the MCP1252 and MCP1253 offer a dc/dc conversion method that automatically operates in buck and boost modes, enabling the input voltage to be higher or lower that the output.





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