DESCRIPTION
●The LT®3508 is a dual current mode PWM step-down DC/DC converter with internal power switches capable of generating two 1.4A outputs. The wide input voltage range of 3.7V to 36V makes the LT3508 suitable for regulating power from a wide variety of sources, including automotive batteries, 24V industrial supplies and unregulated wall adapters. Both converters are synchronized to a single oscillator programmable up to 2.5MHz and run with opposite phases, reducing input ripple current.
●FEATURES
●■ Wide Input Voltage Range: 3.7V to 36V
●■ Two 1.4A Output Switching Regulators with Internal Power Switches
●■ Adjustable 250kHz to 2.5MHz Switching Frequency
●■ Synchronizable over the Full Frequency Range
●■ Anti-Phase Switching Reduces Ripple
●■ Uses Small Inductors and Ceramic Capacitors
●■ Accurate Programmable Undervoltage Lockout
●■ Independent Tracking, Soft-Start and Power Good Circuits Ease Supply Sequencing
●■ Output Adjustable Down to 800mV
●■ Small 4mm × 4mm 24-Pin QFN or 16-Pin Thermally Enhanced TSSOP Surface Mount Packages
●APPLICATIONS
●■ Automotive
●■ DSP Power Supplies
●■ Wall Transformer Regulation
●■ DSL and Cable Modems
●■ PCI Express
