Hot-selling and scarce LTC3708EUH-PBF Fast 2-Phase, No RSENSE Buck Controller with Output Tracking 32QFN spot stock

Product Descriptions

The LTC3708 is a dual,2-phase synchronous step-downswitching regulator with output voltage up/down trackingcapability. The IC allows either coincident or ratiometrictracking . Multiple LTC3708s can be daisy-chained in applications requiring more than two voltages to be tracked .Power supply sequencing is accomplished using an external soft-start timing capacitor.

The  LTC3708  uses a constant on-time, valley currentmode control architecture to deliver very low duty factorswithout requiring a sense resistor. Operating frequency isselected by an external resistor and is compensated forvariations in input supply voltage.An internal phase-lockedloop allows the IC to be synchronized to an external clock .

Fault  protection  is  provided  by an output overvoltagecomparator and an optional short-circuit shutdown timer.The regulator current limit level is user programmable .Awide supply range allows voltages as high as 36V to bestepped down to 0.6V output .

Product Features

n Very Low Duty Factor Operation (tON(MIN) < 85ns)

n  No R SENSE Option for Maximum Efficiency

n Very Fast Transient Response

n  Programmable Output Voltage Up/Down Tracking

n 2-Phase Operation Reduces Input Capacitance

n 0.6V ±1% Output Voltage Reference

n  External Frequency Synchronization

n  Monotonic Soft-Start

n  Onboard High Current MOSFET Drivers

n Wide V IN Range: Up to 36V

n Adjustable Cycle-by-Cycle Current Limit

n  Instant Output Overvoltage Protection

n  Optional Short-Circuit Shutdown Timer

n  Power Good Output with 100µs Masking

n Available in 5mm × 5mm QFN Package

Product Applications

n  Digital Signal Processors

n  Network Servers

Product Specifications

Product Photos

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