Copyright © 2016, Texas Instruments Incorporated

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LM2591HV

SNVS074E – MAY 2001 – REVISED MAY 2016

Regulator

1

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

•

•

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

oscillator.

The LM2591HV 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-pin package with several different lead

bend options, and a 5-pin surface mount package.

Device Information(1)

PART

NUMBER

PACKAGE

BODY SIZE (NOM)

LM2591HV

DDPAK/TO-263 (5)

10.18 mm × 8.41 mm

TO-220 (5)

14.986 mm × 10.16 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application

(Fixed Output Voltage Versions)