Home datasheet LM2591HVT-3.3

LM2591HVT-3.3

SIMPLE SWITCHER®Power Converter 150 kHz 1A Step-Down Voltage Regulator
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General 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 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version.
This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and performance 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 oscillator.

Features
■ 3.3V, 5V, and adjustable output versions
■ Adjustable version output voltage range, 1.2V to 57V ±4% max over line and load conditions
■ Guaranteed 1A output load current
■ Available in 5-pin TO-220 and TO-263 (surface mount) Package
■ Input voltage range up to 60V
■ 150 kHz fixed frequency internal oscillator
■ On/Off control
■ Low power standby mode, IQ typically 90 µA
■ High Efficiency
■ Thermal shutdown and current limit protection

Applications
■ Simple high-efficiency step-down (buck) regulator
■ Efficient pre-regulator for linear regulators
■ On-card switching regulators
■ Positive to Negative converter

 

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Manufacturer information

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