Power management IC from AnalogicTech

14th July 2008

Advanced Analogic Technologies Inc., Europe

ES Admin

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By integrating six channels, featuring two buck converters, one with two step dynamic output voltage, with four LDOs, and independent enable functions, AnalogicTech’s AAT2603 power management IC provides designers maximum design flexibility and power up sequencing while offering opportunity to reduce PCB space, improve reliability and reduce cost.

The AAT2603 is a highly integrated power management IC targeted at mobile GPS devices, Portable Media Players (PMPs) and other handheld mobile systems operating off a single lithium-ion battery. Offering maximum design flexibility, the highly integrated device comes in a small 4 x 4mm TDFN package.

The AAT2603 operates off a 2.7V to 5.5V input range and offers high efficiency across the entire load range.

Delivering with only 200mV of headroom, the first step-down converter supports functions requiring high output current and low dropout voltage. The second step-down converter supplies 600mA and adds a two-step dynamic output voltage capability to match the needs of common system processors. The converter dynamically shifts between the two output voltages by toggling the SELB2 pin.

Four LDOs supply power to a variety of system functions. Two LDOs deliver 200mA and are designed to power noise sensitive circuits. The second pair of LDOs offers 400mA output. Each of the four LDOs consumes just 50microA of quiescent current.
The IC also features multiple protection circuits including those for short-circuit, over-current and over-temperature protection.

The AAT2603 is qualified across the -40 to +85 degrees C temperature range. It is available in a Pb-free, 28-pin, 4x4-mm TQFN package.