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LTC3639

Linear Technology
Part Number LTC3639
Manufacturer Linear Technology
Description 150V 100mA Synchronous Step-Down Regulator
Published Apr 23, 2013
Detailed Description LTC3639 High Efficiency, 150V 100mA Synchronous Step-Down Regulator FEATURES n Wide Operating Input Voltage Range: 4V t...
Datasheet PDF File LTC3639 PDF File

LTC3639
LTC3639

Overview
LTC3639 High Efficiency, 150V 100mA 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 Compensation Required n Adjustable 10mA to 100mA 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 Components 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 100mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size.
The LTC3639’s combination 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 regi...


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