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Linear Technology announces the LTC3445, a compact, high efficiency xScale microprocessor power supply in a 4 × 4 mm QFN package. It contains a high efficiency monolithic synchronous current mode buck regulator, two LDO regulators, a PowerPath™ controller, and an I²C interface in a single QFN package. Its 2.5 to 5.5 V input voltage range makes the LTC3445 suitable for single Li-Ion battery-powered applications. The synchronous buck regulator can deliver up to 600 mA of output current with efficiencies of up to 93%. The user can select either a constant (1.5 MHz) or a spread spectrum switching frequency.

Linear Technology Corporation

Linear Technology Corporation
1630 McCarthy Blvd.
Milpitas, CA, 95035