厂商：Freescale
类别：16位单片机
厂商：Linear
类别：精准放大器
厂商：Yageo
类别：芯片电阻
厂商：
类别：PhotoMOS(MOSFET输出光电耦合器)
类别：晶闸管
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特点Dual Regulated Outputs: One Switching Regulator and One Linear RegulatorExcellent DC Accuracy: ±1.5% for Switcher and ±2% for Linear RegulatorExternal N-Channel MOSFET ArchitectureNo External Current Sense Resistor RequiredBurst Mode? Operation at Light Load (LTC1704)Continuous Switching at Light Load (LTC1704B)Linear Regulator with Programmable Current LimitLinear Regulator with Programmable Start-Up DelayLow Shutdown Current: <150μAHigh Efficiency Over Wide Load Current RangePGOOD Flag Monitors Both OutputsSmall 16-Pin Narrow SSOP Package典型应用典型应用描述The LTC?1704/LTC1704B include a high power synchronous switching regulator controller plus a linear regulator controller. The switching regulator controller is designed to drive a pair of N-channel MOSFETs in a voltage mode, synchronous buck configuration to provide the main supply. The constant frequency, true PWM architecture switches at 550kHz, minimizing external component size, cost and optimizing load transient performance. The LTC1704 features automatic transition to power saving Burst Mode operation at light loads. The LTC1704B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency. The linear regulator controller is designed to drive an external NPN power transistor to provide up to 2A of current to an auxiliary load.The LTC1704/LTC1704B deliver better than ±1.5% DC accuracy at the switcher outputs and ±2% at the linear regulator outputs. High performance feedback loops allow the circuit to keep total output regulation within ±5% under all transient conditions. An open-drain PGOOD output indicates when both outputs are within ±10% of their regulated values.