厂商：Freescale
类别：16位单片机
厂商：Yageo
类别：芯片电阻
厂商：
类别：瞬态抑制二极管
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Atmel
类别：EEPROM
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特点 Out-of-Phase Controllers Reduce Input Capacitance and Power Supply Induced Noise OPTI-LOOP? Compensation Minimizes C OUT Power Good Output Monitors Both Outputs 5-Bit Mobile VID Control, V OUT : 0.9V to 2.0V Dual N-Channel MOSFET Synchronous Drive±1% Output Voltage AccuracyDC Programmed Fixed Frequency 150kHz to 300kHz Wide V IN Range: 3.5V to 36V Operation Very Low Dropout Operation: 99% Duty CycleAdjustable Soft-Start Current RampingFoldback Output Current LimitingLatched Short-Circuit Shutdown with Defeat OptionOutput Overvoltage ProtectionRemote Output Voltage SenseLow Shutdown Current: 20μA5V and 3.3V Standby Regulators Selectable Constant Frequency, Burst Mode? and Continuous Operation 典型应用描述The LTC?1708 is a dual adjustable 5-bit VID programmable step-down switching regulator controller that drives all N-Channel power MOSFET stages. A constant frequency current mode architecture allows adjustment of the frequency up to 300kHz. Power loss and noise due to the ESR of the input capacitance are minimized by operating the two main controller output stages out of phase.OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The precision 0.8V reference is compatible with future microprocessor generations, and a wide 3.5V to 30V (36V maximum) input supply range that encompasses all battery chemistries. A power good output indicates when the output voltages are within 7.5% of their programmed value.A RUN/SS pin for each controller provides both soft-start and an optional timed, short-circuit shutdown. Other protection features include: internal foldback current limiting and an output overvoltage crowbar. The forced continuous control pin (FCB) can be used to inhibit BurstMode operation or to regulate a third, flyback output.