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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.

LM2593HV

SNVS082E – DECEMBER 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

•

Ensured 2-A Output Load Current

•

Available in 7-Pin TO-220 and TO-263 (Surface-

Mount) Package

•

Input Voltage Range up to 60 V

•

150-kHz Fixed Frequency Internal Oscillator

•

Shutdown and Soft-Start

•

Out-of-Regulation Error Flag

•

Error Flag Delay

•

•

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 LM2593HV series of regulators are monolithic

integrated circuits that provide all the active functions

for a step-down (buck) switching regulator, capable of

driving a 2-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

LM2592HV

with

additional

supervisory

and

performance features.

Requiring

a

minimum

number

of

external

components, these regulators are simple to use and

include internal frequency compensation, improved

line and load specifications, fixed-frequency oscillator,

Shutdown/Soft-start, output error flag, and flag delay.

The LM2593HV 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 7-pin TO-220 package with several different

lead bend options, and a 7-pin TO-263 surface-mount

package.

Other features include a specified ±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

overtemperature

shutdown

for

complete

protection

under

fault

conditions.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM2593HV

TO-263 (7)

10.10 mm × 8.89 mm

TO-220 (7)

14.99 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)