Capable of switching at 2.5 MHz, the MAX8581 and MAX8582 step-down dc/dc converters deliver up to 600 mA continuous and integrate a 65-mO bypass FET within 10-pin, 3 mm x 3 mm x 0.8 mm, TDFN packages. During high-power transmission, the FET connects the power amplifier directly to the battery with a dropout of 33 mV at 500 mA, minimizing power loss at the inductor and allowing minimal battery voltage for device usage. The output is dynamically variable from 0.4V to VIN. This improves efficiency by 47% at +10 dBm. Prices start at $1.48 each/2,500. MAXIM INTEGRATED PRODUCTS, Sunnyvale, CA. (800) 998-8800.
Company: MAXIM INTEGRATED PRODUCTS
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