LM2594M-ADJ/NOPB National Semiconductor, LM2594M-ADJ/NOPB Datasheet

LM2594M-ADJ/NOPB

Manufacturer Part Number

LM2594M-ADJ/NOPB

Description

IC REG SIMPLE SWITCHER 8-SOIC

Manufacturer

National Semiconductor

Series

SIMPLE SWITCHER®r

Type

Step-Down (Buck)r

Datasheets

1.LM2594MX-5.0NOPB.pdf (28 pages)

2.LM2594M-ADJNOPB.pdf (5 pages)

Specifications of LM2594M-ADJ/NOPB

Internal Switch(s)

Yes

Synchronous Rectifier

Number Of Outputs

Voltage - Output

1.2 ~ 37 V

Current - Output

500mA

Frequency - Switching

150kHz

Voltage - Input

4.5 ~ 40 V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Primary Input Voltage

60V

No. Of Outputs

Output Voltage

37V

Output Current

500mA

No. Of Pins

Operating Temperature Range

-40Â°C To +125Â°C

Msl

MSL 1 - Unlimited

Rohs Compliant

Yes

Current, Input Bias

10 nA

Current, Output

0.5 A

Current, Supply

5 mA

Frequency, Oscillator

150 kHz

Package Type

SOIC

Regulator Type

Buck (Step-Down)

Temperature, Operating, Range

-40 to +125 °C

Voltage, Input

4.5 to 40 V

Voltage, Output

1.2 to 37 V

Peak Reflow Compatible (260 C)

Yes

Termination Type

SMD

Filter Terminals

SMD

Input Voltage

40V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

Other names

*LM2594M-ADJ
LM2594M-ADJ

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2594M-ADJ/NOPB

Manufacturer:

National Semiconductor

Quantity:

1 940

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2594M-ADJ/NOPB

Manufacturer:

NS/TI

Quantity:

Company:

Amily Shenzhen XNWY Technology Co., Ltd

Part Number:

LM2594M-ADJ/NOPB

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Download datasheet (73Kb)

LM2594/LM2594HV

SIMPLE SWITCHER

Step-Down Voltage Regulator

General Description

The LM2594/LM2594HV series of regulators are monolithic

integrated circuits that provide all the active functions for a

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

0.5A load with excellent line and load regulation. These de-

vices are available in fixed output voltages of 3.3V, 5V, 12V,

and an adjustable output version, and are packaged in a

8-lead DIP and a 8-lead surface mount package.

Requiring a minimum number of external components, these

regulators are simple to use and feature internal frequency

compensation

line and load regulation specifications.

The LM2594/LM2594HV series operates at a switching fre-

quency of 150 kHz thus allowing smaller sized filter compo-

nents than what would be needed with lower frequency

switching regulators. Because of its high efficiency, the cop-

per traces on the printed circuit board are normally the only

heat sinking needed.

A standard series of inductors (both through hole and sur-

face mount types) are available from several different manu-

facturers optimized for use with the LM2594/LM2594HV se-

ries. This

switch-mode power supplies.

Other features include a guaranteed

put voltage under all conditions of input voltage and output

load conditions, and

ternal shutdown is included, featuring typically 85 µA

standby current. Self protection features include a two stage

frequency reducing current limit for the output switch and an

over temperature shutdown for complete protection under

fault conditions.

Typical Application

SIMPLE SWITCHER and Switchers Made Simple

feature

†

, a fixed-frequency oscillator, and improved

greatly

15% on the oscillator frequency. Ex-

simplifies

™

(Fixed Output Voltage Versions)

are registered trademarks of National Semiconductor Corporation.

4% tolerance on out-

DS012439

the

Power Converter 150 kHz 0.5A

design

The LM2594HV is for applications requiring an input voltage

up to 60V.

Features

n 3.3V, 5V, 12V, and adjustable output versions

n Adjustable version output voltage range, 1.2V to 37V

n Available in 8-pin surface mount and DIP-8 package

n Guaranteed 0.5A output current

n Input voltage range up to 60V

n Requires only 4 external components

n 150 kHz fixed frequency internal oscillator

n TTL Shutdown capability

n Low power standby mode, I

n High Efficiency

n Uses readily available standard inductors

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 convertor

(57V for the HV version)

conditions

4% max over line and load

typically 85 µA

DS012439-1

Related parts for LM2594M-ADJ/NOPB

LM2594M-ADJ/NOPB Summary of contents

Page 1

... Typical Application (Fixed Output Voltage Versions) SIMPLE SWITCHER and Switchers Made Simple ™ are registered trademarks of National Semiconductor Corporation. © 2000 National Semiconductor Corporation Power Converter 150 kHz 0.5A ® The LM2594HV is for applications requiring an input voltage up to 60V. ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Supply Voltage LM2594 LM2594HV ON /OFF Pin Input Voltage Feedback Pin Voltage Output Voltage to Ground (Steady State) Power Dissipation Storage Temperature Range ESD Susceptibility LM2594/LM2594HV-3 ...

Page 3

LM2594/LM2594HV-ADJ Electrical Characteristics Specifications with standard type face are for T ture Range Symbol Parameter SYSTEM PARAMETERS (Note 5) Test Circuit Figure 1 V Feedback Voltage 4. OUT Efficiency V IN All Output Voltage Versions Electrical Characteristics Specifications ...

Page 4

... Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead (0.150" Wide) Molded Small Outline Package, Order Number LM2594M-3.3, LM2594M-5.0, LM2594M-12 or LM2594M-ADJ JEDEC NS Package Number M08A 27 ...

Page 5

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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