60-V input buck controller draws only 50 µA

60-V input buck controller draws only 50 µA

The LTC3891 dc/dc synchronous controller draws 50 µA in standby mode with the output in regulation. The 4 to 60-V input supply range protects against high-voltage transients and helps continue operation during automotive cold crank. The output voltage can be set from 0.8 to 24 V at output currents up to 20 A with efficiencies up to 95%. It suits 12-, 24-, or 48-V automotive, heavy equipment, industrial control, robotics, and telecom applications.

The synchronous step-down controller has 1.1-Ω on-chip MOSFET gate drivers. It operates with a selectable fixed frequency between 50 and 900 kHz and can sync to an external clock from 75 to 850 kHz. Three operating junction temperature grades are available including 40 to 125°C, 40° to 150°C, and -55°C to 150°C. (From $3.47 ea/1,000 – available now.)

Linear Technology , Milpitas , CA
Sales Office 408-428-2050
www.linear.com