LTC3639 Datasheet | Linear Technology

High Efficiency, 150V 100m A Synchronous Step-Down Regulator Features n Wide Operating Input Voltage Range: 4V to 150V n Synchronous Operation for Highest Efficiency n Internal High Side and Low Side Power MOSFETs n No pensation Required n Adjustable 10m A to 100m A Maximum Output Current n Low Dropout Operation: 100% Duty Cycle n Low Quiescent Current: 12µA n Wide Output Range: 0.8V to VIN n 0.8V ±1% Feedback Voltage Reference n Precise RUN Pin Threshold n Internal or External Soft-Start n Programmable 1.8V, 3.3V, 5V or Adjustable Output n Few External ponents Required n Programmable Input Overvoltage Lockout n Thermally Enhanced High Voltage MSOP Package APPLICATIONS n Industrial Control Supplies n Medical Devices n Distributed Power Systems n Portable Instruments n Battery-Operated Devices n Automotive n Avionics DESCRIPTION The LTC®3639 is a high efficiency step-down DC/DC regulator with internal high side and synchronous power switches that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load. The LTC3639 can supply up to 100m A load current and Features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and ponent size. The LTC3639’s bination of Burst Mode® operation, integrated power switches, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents. With its wide input range of 4V to 150V and programmable overvoltage lockout, the LTC3639 is a robust regulator suited for regulating from a wide variety of power sources. Additionally, the LTC3639 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment. The LTC3639 is available in a thermally enhanced high voltage-capable 16-lead MSE package with four missing pins. L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are...