厂商：Freescale
类别：16位单片机
厂商：Linear
类别：开关稳压器
厂商：Yageo
类别：芯片电阻
厂商：
类别：PhotoMOS(MOSFET输出光电耦合器)
类别：电压基准
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特点 Wide V IN Range: 3V to 30V Operation with Line Feedforward Compensation Leading Edge Modulation Architecture for Extremely Low Duty Cycle OperationPhase-Lockable Fixed Frequency: 330kHz to 750kHzTwo 180° Out-of-Phase ControllersFast Programmable Power-Up/-Down TrackingProgrammable Current Limit Without External Current Sense ResistorOptional Burst Mode? Operation at Light Load±1% 0.6V Voltage ReferenceExternal N-Channel MOSFET ArchitectureLow Shutdown Current: <100μAOvervoltage Protection and PGOOD FlagSmall 28-Lead SSOP and 32-Lead QFN Packages典型应用描述The LTC?3802 is a dual switching regulator controller optimized for high efficiency step-down conversion from input voltages between 3V to 30V. The controller uses a leading edge modulation scheme to allow extremely low duty cycle operation. The constant frequency voltage mode controller allows a phase-lockable frequency between 330kHz and 750kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages 180° out of phase. The synchronous buck architecture automatically shifts to Burst Mode operation as the output load decreases, ensuring maximum efficiency over a wide range of load currents.The LTC3802 features an onboard, trimmed 0.6V reference and provides better than 1% regulation at the converter outputs. A separate output sense provides real time overvoltage protection and PGOOD sensing. An FBT pin programs the power-up/-down tracking between the two channels to meet various sequencing requirements. A RUN/SS pin provides soft-start and externally programmable current limit protection functions.U.S. Patent Nos 5481178, 5846544, 6304066, 6580258, 5055767, 6307356