AnalogicTech's High Voltage Step-Down Converters

Advanced Analogic Technologies Inc. (AnalogicTech) has announced a family of high voltage, high current, non-synchronous step-down converters capable of providing high efficiency power conversion from 24V supplies Operating from 6-24V input, the AAT1189 step-down converter is targeted at consumer electronics equipment operating from a low cost AC/DC adapter. It delivers up to 2.5 A output current and has 490 kHz switching frequency. AAT2687 and AAT2689 combine high voltage step-down converter with a low input voltage LDO regulator. Buck converters on both devices operate off 6-24 V input and deliver 1.5-5.5 VOUT. AAT2689 delivers up to 2.5 A, while AAT2687 supplies up to 4.5 A. The entire product family is qualified across the -40 C to +85 degrees C temperature range. The AAT1189 is available in a Pb-free, 16-pin, 3x4-mm TDFN package and sells for $0.87 in 1K quantities. The AAT2689 is also available in a Pb-free, 16-pin 3x4-mm TDFN package and sells for $1.03 in 1K quantities. Coming in a Pb-free, 24-pin, 4 x 5-mm TQFN package, the AAT2687 sells for $1.16 in 1K quantities.