AAT1275
Description
The AAT1275 Switch Reg is a 2MHz, 500m A synchronous boost converter with an integrated currentlimiting load switch controlled output. The AAT1275 operates from a single-cell Lithium-ion/ polymer battery source and provides a regulated 5V, current limit controlled output to support USB port VBUS applications in portable consumer electronic products. The AAT1275 can support both USB 2.0 host port and USB on-the-go operation, as well as general purpose applications where a 5V supply with a user programmable current limit is needed. The high efficiency boost converter section of the AAT1275 is typically set for a 5V output and can deliver up to 500m A load current to support USB VBUS operation from an input supply as low as 2.7V. The high boost converter switching frequency (up to 2.0MHz) provides fast load transient and allows the use of small external ponents. Fully integrated control circuitry simplifies system design and reduces total solution size.
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Features
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