DESCRIPTION
The LT®3694/LT3694-1 are monolithic, current mode DC/DC converters with dual, low dropout regulator controllers. The switching converter is a step-down converter capable of generating up to 2.6A at its output. Each regulator has independent track/soft-start circuits simplifying power supply sequencing and interfacing with microcontrollers and DSPs.

FEATURES
■ Wide Input Range: 4V to 36V
■ Overvoltage Shutdown Protects Circuit Through 70V Transients
■ 2.6A Output Switching Regulator with Internal Power Switch
■ Dual, Low Dropout, Linear Regulator Controllers with Programmable Current Limit
■ Tracking/Soft-Start Inputs and Power Good Output Simplify Soft-Start and Supply Sequencing
■ Uses Small Inductors and Ceramic Capacitors
■ VOUT(MIN) = 0.75V (Buck and LDOs)
■ 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)
■ Thermally Enhanced 28-Lead 4mm × 5mm QFN and 20-Lead TSSOP Packages

APPLICATIONS
■ Automotive
■ Industrial
■ DSL and Cable Modems
■ Distributed Power Regulation
■ Wall Transformer Regulation