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Atmel bestows upgrades to PMU

Posted: 16 Jul 2008 ?? ?Print Version ?Bookmark and Share

Keywords:PMU AT73C237? power management unit? LDO regulator?

Atmel Corp. introduces the AT73C237, a power management unit (PMU) compatible with a 5V input supply and generating four regulated output voltages, with programmable output voltage selection and output current up to 70mA.

The AT73C237 has a similar architecture to the established AT73C239 PMU, but supports a 5V supply. It integrates four LDO regulators, three of which provide the high-accuracy supply (programmable from 1.2V to 2.75V) required by RF and analog devices, and one 1.8V regulator for backup battery/capacitor recharging. It integrates a Two Wire Interface (TWI) to allow a microcontroller to program the variable LDO output voltages and manage the enable of each LDO.

"A number of customers have appreciated using the AT73C239 and many of them have requested a direct 5V input. The AT73C237 was designed to answer this requirement," commented Michele Casetta, marketing manager for Atmel's Power Management and Analog Companions (PMAAC) product line.

Atmel offers the AT73C237 in a 3mm x 3mm, 16-pin QFN package priced at $0.65 in quantities of 100,000 units. It is available now mounted on a reference design board or as engineering samples.

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