厂商：Freescale
类别：16位单片机
厂商：Linear
类别：精准放大器
类别：开关稳压器
厂商：
类别：保险丝
类别：PhotoMOS(MOSFET输出光电耦合器)
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特点 V OUT = 1/2 V IN (Supply Splitter) Adjustable and Symmetrical Sink/Source Current Limit up to 20A±0.65% Output Voltage AccuracyUp to 97% EfficiencyNo Sense Resistor RequiredUltrafast Transient ResponseTrue Current Mode Control2% to 90% Duty Cycle at 200kHz t ON(MIN) Stable with Ceramic C OUT Dual N-Channel MOSFET Synchronous DrivePower Good Output Voltage Monitor Wide V CC Range: 4V to 36V Adjustable Switching Frequency up to 1.5MHzOutput Overvoltage ProtectionOptional Short-Circuit Shutdown TimerAvailable in a 16-Pin Narrow SSOP Package典型应用典型应用描述The LTC?3717 is a synchronous step-down switching regulator controller for double data rate (DDR) and Quad Data Rate? (QDR?) memory termination. The controller uses a valley current control architecture to deliver very low duty cycles without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in V IN .Forced continuous operation reduces noise and RF interference. Output voltage is internally set to half of V REF , which is user programmable.Fault protection is provided by an output overvoltage comparator and optional short-circuit shutdown timer. Soft-start capability for supply sequencing is accomplished using an external timing capacitor. The regulator current limit level is symmetrical and user programmable. Wide supply range allows operation from 4V to 36V at the V CC input.