Step-down switching regulator has dual linear controllers

The LT3694 operates from a VIN range of 4V to 36V with transient protection to 70V, making it ideal for load dump and cold-crank conditions found in automotive applications.

Its internal 3.5A switch can deliver up to 2.6A of continuous output current at voltages as low as 0.75V.

Key features: 2.6A output switching regulator with internal power switch; dual, low dropout, linear regulator controllers with programmable current limit; tracking/soft-start inputs & power good output simplify soft-start and supply sequencing; small inductors and ceramic capacitors; adjustable 250kHz to 2.5MHz switching frequency ; Accurate enable threshold allows User-programmable undervoltage lockout; options for clock synchronization (LT3694) or clock output to enable synchronization to other switching regulators (LT3694-1).

Packaged in thermally enhanced 28-lead 4x 5mm QFN & 20-Lead TSSOP Packages, the LT3694 is available in volume quantities now. Prices start at $4 each, 1,000-unit volumes.

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