LTC3638 - Linear Technology

LTC3638 140V 250mA Step-Down Regulator

The LTC®3638 is a high efficiency step-down DC/DC regulator with internal power switch that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load. The LTC3638 can supply up to 250mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing o.

Features

n Wide Operating Input Voltage Range: 4V to 140V n Internal Low Resistance Power MOSFET n No Compensation Required n Adjustable 20mA to 250mA 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.