厂商：Freescale
类别：16位单片机
厂商：
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Atmel
类别：EEPROM
厂商：Panasonic
类别：功率继电器
厂商：Murata
类别：共模扼流线圈
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特点Output Stages Operate Antiphase Reducing Input and Output Capacitance Requirements and Power Supply Induced NoiseDual Input Supply Capability for Load Sharing 5-Bit SUN CPU VID Code: ??V OUT = 1.025V to 1.4125V ±1% Output Voltage AccuracyTrue Remote Sensing Differential AmplifierPower Good Output Voltage MonitorSupports Active Voltage PositioningCurrent Mode Control Ensures Current SharingOPTI-LOOP? Compensation Minimizes COUTThree Operational Modes: PWM, Burst and Cycle SkipProgrammable Fixed Frequency: 150kHz to 300kHzWide VIN Range: 4V to 36V OperationAdjustable Soft-Start Current RampingInternal Current Foldback and Short-Circuit ShutdownOvervoltage Soft Latch Eliminates Nuisance TripsAvailable in 36-Lead Narrow (0.209) SSOP Package典型应用描述The LTC?3819 is a 2-phase, VID programmable, synchronous step-down switching regulator controller that drives two N-channel external power MOSFET stages in a fixed frequency architecture. The 2-phase controller drives its two output stages out of phase at frequencies up to 300kHz to minimize the RMS ripple currents in both input and output capacitors. The 2-phase technique effectively multiplies the fundamental frequency by two, improving transient response while operating each channel at an optimum frequency for efficiency. Thermal design is also simplified.An operating mode select pin (FCB) can be used to select among three modes including Burst Mode? operation for highest efficiency. An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output terminals as required in high current applications.The RUN/SS pin provides soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when the overcurrent latchoff is disabled. OPTI-LOOP compensation allows the transient response to be optimized for a wide range of output capacitors and ESR values.