厂商：Freescale
类别：16位单片机
厂商：CooperBussmann
类别：共模扼流线圈
厂商：Atmel
类别：SPLD/CPLD
厂商：Linear
类别：零漂移放大器
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Peregrine
类别：混频器
我要询价我要收藏
特点5-Bit Programmable Output Voltage: 1.05V to 1.825V (VRM8.5)No Sense Resistor Required2% to 87% Duty Cycle at 200kHz t ON(MIN) <= 100ns Supports Active Voltage PositioningTrue Current Mode Control Stable with Ceramic C OUT Dual N-Channel MOSFET Synchronous DrivePower Good Output Voltage Monitor Wide V IN Range: 4V to 36V ±1% 0.8V ReferenceAdjustable Current LimitAdjustable Switching FrequencyForced Continuous Control PinProgrammable Soft-StartOutput Overvoltage ProtectionOptional Short-Circuit Shutdown Timer Micropower Shutdown: I Q < 30μA Available in 28-Lead Narrow SSOP Package典型应用典型应用描述The LTC?3720 is a synchronous step-down switching regulator controller for CPU power. An output voltage between 1.05V and 1.825V is selected by a 5-bit code (Intel VRM8.5 VID specification). 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 and V OUT .Discontinuous mode operation provides high efficiency operation at light loads. A forced continuous control pin reduces noise and RF interference and can assist secondary winding regulation by disabling discontinuous mode operation when the main output is lightly loaded.Fault protection is provided by internal foldback current limiting, 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 also user programmable. Wide supply range allows operation from 4V to 36V at the input.