Microchip Intros MCP1252/MCP1253 DC/DC Converters
Microchip Technology Inc. (Chandler, AZ) announced two new regulated charge pump DC/DC converters, the MCP1252 and MCP1253, which are 120mA regulated, charge pump devices that provide a space-saving, power management product that accomplishes dc/dc conversions in a battery-operated environment without the need of an inductor. The new converters are suitable for dc/dc conversions in compact battery-operated systems such as cell phones, PDAs, MP3 players, pagers, hand-held meters and wireless controllers such as game joysticks.
The devices require less external components than many other charge pump devices and do not require an inductor. From a 2.7V through 5.5V input source, the devices provide either a fixed 3.3V or 5.0V output, or an adjustable output voltage of 1.5V to 5.5V. In addition, the devices have a low drain current of 60µA, and a shutdown current of 0.1µA. Both offer a power-good output that can detect an out-of-regulation situation with an output-voltage accuracy of ±2.5 percent maximum, 0.5 percent typical. The devices offer a dc/dc conversion method that automatically operates in buck and boost modes, meaning that the input voltage can either be higher or lower than the output voltage.
The MCP1252 and MCP1253 are available in eight-pin MSOP packages and are specified over a temperature range of -40 to +85 degrees C. Pricing in 1,000-unit quantities for the MCP1252 and MCP1253 is $1.61 each. Samples and volume production are scheduled for December 2002.
