DESCRIPTION
The LTC®3609 is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 6A output current from a 4V to 32V (36V maximum) input supply. It uses a valley current control architecture to deliver very low duty cycle operation at high frequency with excellent transient response. The operating frequency is selected by an external resistor and is compensated for variations in VIN and VOUT.

FEATURES
■ 6A Output Current
■ Wide VIN Range = 4V to 32V (36V Maximum)
■ Internal N-Channel MOSFETs
■ True Current Mode Control
■ Optimized for High Step-Down Ratios
■ tON(MIN) ≤ 100ns
■ Extremely Fast Transient Response
■ Stable with Ceramic COUT
■ ±1% 0.6V Voltage Reference
■ Power Good Output Voltage Monitor
■ Adjustable On-Time/Switching Frequency
■ Adjustable Current Limit
■ Programmable Soft-Start
■ Output Overvoltage Protection
■ Optional Short-Circuit Shutdown Timer
■ Low Shutdown IQ: 15μA
■ Available in a 7mm × 8mm 52-Pin QFN Package

APPLICATIONS
■ Point of Load Regulation
■ Distributed Power Systems