The AAT2138 synchronous dc/dc converter features a 2.5-A output current with an integrated, ±10% precision current-limit load switch designed to regulate the power in USB peripherals. Capable of supporting power levels beyond the USB 3.0 standard, the AAT2138 offers an ideal solution for a broad range of USB-powered devices including wireless modem data cards, portable hard drives or RAID systems, and card readers.
The dc/dc converter features selectable PFM/PWM modes, an external synch clock up to 3 MHz, independent enable pins for the dc/dc converter and load switch, and an adjustable output voltage and current limit. The converter operates from a 2.7 to 5.5−V input and provides an output down to 3.0 V. Additionally, the part is optimized for a 1−µH inductor with no external compensation required. It is offered in a lead-free, low profile 3 x 3-mm 14-pin TDFN package. ($1.19 ea/1,000 — available now.)
By Paul O’Shea
Advanced Analogic Technologies , Sunnyvale , CA
Phil Dewsbury 408-737-4600
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