Home datasheet LM2592HVSX-3.3

LM2592HVSX-3.3

SIMPLE SWITCHER®Power Converter 150 kHz 2A Step-Down Voltage Regulator
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General Description
The LM2592HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 2A 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 LM2593HV, 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.
The LM2592HV operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 Surface mount package.
Other features include a guaranteed ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90 µA standby current. Self protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

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 2A 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

NATIONAL ->TEXAS INSTRUMENTS
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