Electronicdesign 5370 Linear B2

8-Channel DC/DCs Manage Multi-Rail Systems

Nov. 20, 2012
The LTC3375 from Linear Technology is a digitally programmable power management IC designed for systems requiring multiple low voltage power supplies.
The LTC3375 from Linear Technology is a digitally programmable power management IC designed for systems requiring multiple low voltage power supplies. The device features eight independent 1 A channels with I2C control, flexible sequencing and fault monitoring. Each channel is a synchronous step-down regulator with its own independent 2.25 V to 5.5 V input supply. The buck dc/dc’s may also be connected in parallel to achieve output currents up to 4 A per output with a single shared inductor. The IC features a programmable and synchronizable 1 to 3 MHz oscillator with a 2 MHz default switching frequency. Suitable for a variety of multichannel applications including industrial, automotive and communications systems, the LTC3375 is available from stock in a thermally enhanced, 0.75 mm profile, 48-pin 7 x 7 mm exposed pad QFN package. E and I grades are specified over an operating temperature of -40°C to +125°C, and the H grade operates from -40°C to +150°C. Pricing starts at $5.45 each/1,000 for the E grade.

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