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Electrical and electronic components

60V low IQ buck controller plus 4-Channel 8A configurable buck DC/DCs

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By Linear Technology now part of Analog Devices on 2nd August 20182nd August 2018

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Analog Devices, Inc. announced today the Power by Linear^™ LTC3372, a highly integrated power management solution for systems that require multiple low voltage outputs generated from an input voltage as high as 60V. The LTC3372 features a 60V synchronous buck switching regulator controller followed by four configurable synchronous monolithic buck regulators. This combination provides up to five high efficiency low quiescent current outputs in a single IC, ideal for automotive, industrial and medical applications.

The LTC3372’s buck controller operates over a 4.5V to 60V input voltage range and drives an all N-channel MOSFET power stage. Its output can be programmed to either 3.3V or 5V and can generate an output current up to 20A. The controller output is typically used to feed the four monolithic buck regulators. Each monolithic buck channel can be programmed to regulate an output voltage as low as 0.8V with a configurable output current up to 4A. Eight 1A integrated power stages are programmed by the C1-C3 pins into one of eight unique configurations, from a quad 2A buck to a dual 4A buck. This allows only one inductor per channel.

The LTC3372 offers a low IQ solution ideal for battery-powered or automotive applications in which one or more power supply rails are always on. With just the high voltage controller enabled, the device draws 15µA from a 12V input supply while regulating the output to 5V at no load. Each monolithic buck regulator adds only 8µA of additional IQ per channel enabled. The LTC3372’s monolithic buck switching frequency can be programmed from 1MHz to 3MHz and can be synchronized to an external clock while the buck controller switches at 1/6 of this frequency. Additional features include foldback current limiting, soft-start, short-circuit protection and output overvoltage protection.

The LTC3372 is available from stock in a thermally enhanced 48-pin 7mm x 7mm QFN package. E and I grades are specified over an operating junction temperature range of –40°C to 125°C, and the H grade features operation from –40°C to 150°C. For more information, visit www.analog.com/LTC3372.

Linear Technology now part of Analog Devices

Analog Devices (NASDAQ: ADI) is the leading global high-performance analog technology company dedicated to solving the toughest engineering challenges.

Contact Supplier Visit our website 01628 477066

About Analog Devices
Analog Devices (NASDAQ: ADI) is the leading global high-performance analog technology company dedicated to solving the toughest engineering challenges. We enable our customers to interpret the world around us by intelligently bridging the physical and digital with unmatched technologies that sense, measure, power, connect and interpret. Visit http://www.analog.com

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