LT3508IFE#TRPBF

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. Its high operating
frequency allows the use of small, low cost inductors and
ceramic capacitors, resulting in low, predictable output
ripple. Each regulator has independent tracking and softstart circuits and generates a power good signal when its
output is in regulation, easing power supply sequencing
and interfacing with microcontrollers and DSPs.
Cycle-by-cycle current limit, frequency foldback and thermal shutdown provide protection against shorted outputs,
and soft-start eliminates input current surge during startup. The low current (<2μA) shutdown mode enables easy
power management in battery-powered systems.


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    SPECIFICATION

    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