厂商：Freescale
类别：16位单片机
类别：PowerQUICC III
厂商：Linear
类别：监控电路
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Skyworks
类别：切换开关
厂商：Atmel
类别：ATmega系列单片机
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特点 Greatly Reduced Conducted and Radiated EMI Low Switching Harmonic ContentIndependent Control of Output Switch Voltage and Current Slew Rates Greatly Reduced Need for External Filters Single N-Channel MOSFET Driver20kHz to 250kHz Oscillator FrequencyEasily Synchronized to External ClockRegulates Positive and Negative VoltagesEasier Layout Than with Conventional Switchers典型应用典型应用描述The LT?1738 is a switching regulator controller designed to lower conducted and radiated electromagnetic interference (EMI). Ultralow noise and EMI are achieved by controlling the voltage and current slew rates of an exter-nal N-channel MOSFET switch. Current and voltage slew rates can be independently set to optimize harmonic content of the switching waveforms vs efficiency. The LT1738 can reduce high frequency harmonic power by as much as 40dB with only minor losses in efficiency.The LT1738 utilizes a current mode architecture optimized for single switch topologies such as boost, flyback and Cuk. The IC includes gate drive and all necessary oscillator, control and protection circuitry. Unique error amp circuitry can regulate both positive and negative voltages. The internal oscillator may be synchronized to an external clock for more accurate placement of switching harmonics.Protection features include gate drive lockout for low V IN , soft-start, output current limit, short-circuit current limit-ing, gate drive overvoltage clamp and input supply undervoltage lockout.