厂商：Freescale
类别：16位单片机
厂商：Linear
类别：精准放大器
厂商：
类别：瞬态抑制二极管
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Atmel
类别：ATmega系列单片机
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特点Out-of-Phase Controllers Reduce Required Input CapacitanceTrue PLL for Frequency Locking or Frequency AdjustmentOperating Frequency Range: 300kHz to 750kHz Wide V IN Range: 2.5V to 10V Constant Frequency Current Mode ArchitectureLow Dropout: 100% Duty CyclePower Good Output Voltage MonitorInternal Soft-Start CircuitrySelectable Burst Mode?/Pulse Skipping Operation at Light LoadsOutput Overvoltage ProtectionLow Quiescent Current: 460μA0.8V ±2% Voltage ReferenceSmall 16-Lead Narrow SSOP Package典型应用典型应用描述The LTC?3701 is a 2-phase dual constant frequency current mode step-down DC/DC controller providing excellent load and line regulation. Power loss and noise due to ESR of the input capacitor are minimized by operating the two controller output stages out-of-phase.The LTC3701 provides a 0.8V ±2% voltage reference and consumes only 460μA of quiescent current. To further maximize the life of a battery source, the external P-channel MOSFET is turned on continuously in dropout (100% duty cycle).Switching frequency is internally set at 550kHz, allowing the use of small inductors and capacitors. For noise sensitive applications, the LTC3701 can be externally synchronized using its phase-locked loop. The frequency can also be externally set from 300kHz to 750kHz by applying a voltage to the PLLLPF pin. Burst Mode operation is inhibited during synchronization or when the EXTCLK/MODE pin is pulled low to reduce noise and RF interference.The LTC3701 contains independent internal soft-start circuitry for each controller. Other features include a power good output voltage monitor and output overvoltage and short-circuit protection.The LTC3701 is available in a small footprint 16-lead narrow SSOP package.