LM2592HVS50 National Semiconductor, LM2592HVS50 Datasheet

LM2592HVS50

Manufacturer Part Number

LM2592HVS50

Description

TO263

Manufacturer

National Semiconductor

Datasheet

1.LM2592HVT-ADJ.pdf (20 pages)

Specifications of LM2592HVS50

Date_code

04+

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LM2592HV

SIMPLE SWITCHER

Step-Down Voltage Regulator

General Description

The LM2592HV series of regulators are monolithic inte-

grated 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 de-

vices 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 perfor-

mance features of the latter.

Requiring a minimum number of external components, these

regulators are simple to use and include internal frequency

compensation

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

put voltage under all conditions of input voltage and output

load conditions, and

ternal shutdown is included, featuring typically 90 µA

standby current. Self protection features include a two stage

Typical Application

SIMPLE SWITCHER

†

, improved line and load specifications and a

and Switchers Made Simple

15% on the oscillator frequency. Ex-

(Fixed Output Voltage Versions)

are registered trademarks of National Semiconductor Corporation.

4% tolerance on out-

DS101294

Power Converter 150 kHz 2A

current limit for the output switch and an over temperature

shutdown for complete protection under fault conditions.

Features

n 3.3V, 5V, and adjustable output versions

n Adjustable version output voltage range, 1.2V to 57V

n Guaranteed 2A output load current

n Available in 5-pin TO-220 and TO-263 (surface mount)

n Input voltage range up to 60V

n 150 kHz fixed frequency internal oscillator

n On/Off control

n Low power standby mode, I

n High Efficiency

n Thermal shutdown and current limit protection

Applications

n Simple high-efficiency step-down (buck) regulator

n Efficient pre-regulator for linear regulators

n On-card switching regulators

n Positive to Negative converter

Note:

Package

4% max over line and load conditions

†

Patent Number 5,382,918.

typically 90 µA

10129401

www.national.com

August 2001

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