厂商：Freescale
类别：16位单片机
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)
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特点Sense Resistor OptionalOut-of-Phase Controllers Reduce Required Input CapacitanceProgrammable Output Voltage TrackingConstant Frequency Current Mode Architecture Wide V IN Range: 2.75V to 9.8V Wide V OUT Range: 0.6V to V IN 0.6V ±1.5% ReferenceLow Dropout Operation: 100% Duty CycleTrue PLL for Frequency Locking or Adjustment (Frequency Range 250kHz to 850kHz) Selectable Burst Mode ? or Pulse Skipping Operation at Light Loads Internal Soft-Start CircuitrySelectable Maximum Peak Current Sense ThresholdPower Good Output Voltage MonitorOutput Overvoltage Protection Micropower Shutdown: I Q = 9μA Tiny 4mm × 4mm QFN and 24-Lead SSOP Packages?典型应用典型应用描述The LTC ? 3737 is a 2-phase dual step-down switching regulator controller that requires few external components. The constant frequency current mode architecture provides excellent AC and DC load and line regulation. MOSFET V DS sensing eliminates the need for current sense resistors and improves efficiency. Power loss and noise due to the ESR of the input capacitance are minimized by operating the two controllers out of phase.Burst Mode operation provides high efficiency operation at light loads. 100% duty cycle provides low dropout operation and extends battery operating time.Switching frequency can be programmed up to 750kHz, allowing the use of small surface mount inductors and capacitors. For noise sensitive applications, the LTC3737 can be externally synchronized from 250kHz to 850kHz.Other features include a power good output voltage monitor, a tracking input and internal soft-start.The LTC3737 is available in the low profile thermally enhanced (4mm × 4mm) QFN package or a 24-lead SSOP narrow package.Protected by U.S. Patents, including 5481178, 5731694, 5929620, 6144194, 6580258, 5994885.