The TPS2500 and TPS2501 incorporate a boost switching regulator with an onboard current-limiting switch that meets 5–V USB power requirements from a 1.8 to 5.25–V input. The output current limit can be programmed via an external resistor from as low as 130 mA to as high as 1,400 mA, supporting up to two USB ports from a single device.
The onboard switching regulator offers >94% efficiency for 3.3-V inputs at typical USB current ranges. The TPS2500 features a pulse-skipping mode for high efficiency at light loads, while the TPS2501 employs fixed-frequency operation across the load range for EMI sensitive designs. Both devices are designed for battery-powered portable devices, set-top boxes, printers, or any USB application without native 5–V supply. ($1.20 ea/1,000 — available now.)
Texas Instruments , Dallas , TX
Product Information Center 800-477-8924
http://www.ti.com
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