LM2591HV

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2591HV SNVS074E – MAY 2001 – REVISED MAY 2016 LM2591HV SIMPLE SWITCHER® Power Converter 150-kHz, 1-A Step-Down Voltage Regulator 1 Features 1 3.3-V, 5-V, and Adjustable Output Versions Adjustable Version Output Voltage Range: 1.2 V to 57 V ±4% Maximum Over Line and Load Conditions Specified 1-A Output Load Current Available in 5-Pin Package Input Voltage Range Up to 60 V 150-kHz Fixed Frequency Internal Oscillator ON and OFF Control Low Power Standby Mode, IQ Typically 90 μA High Efficiency Thermal Shutdown and Current-Limit Protection 2 Applications Simple High-Efficiency Step-Down (Buck) Regulators Efficient Preregulator for Linear Regulators On-Card Switching Regulators Positive-to-Negative Converters 3 Description The LM2591HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, and an adjustable output version. This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and control features of the latter. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, and a fixed-frequency...