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4-output dc/dc converter

See this new product at electronica 2008, stands A5.324 and A3.475

For the many applications that require multiple regulated voltage rails, Maxim has introduced the MAX15022 quad-output converter. The chip has two internal switching regulators rated at 4A and 2A, and two linear controllers that can deliver a minimum of 1A of output current. Switching frequency is up to 4 MHz and the two switching regulators operate 180° out-of-phase, allowing for the use of a very small inductor and reducing the input capacitance required. The twin linear controllers have 20mA current-sink capability and can drive two external, low-cost PNP transistors to provide two additional power rails that deliver over 1A of output current. The MAX15022 can externally compensate the switching regulator as well as adjust the output voltage from 0.6V to the input voltage. It will also allow monotonic startup into a prebiased output. It has independent enable inputs with analogue thresholds for power sequencing during power-up and power-down, and you can configure it to track the converter output voltage 1:1 or in a set ratio. Other features include digital soft-start/soft-stop, cycle-by-cycle lossless current sensing, hiccup-mode operation, and thermal protection. It comes in a 28-pin, 5mm x 5mm TQFN package with a temperature rating of -40°C to +125°C and costs $3.07 (1000)
Maxim, www.maxim-ic.com