LM2596S-ADJ/NOPB National Semiconductor, LM2596S-ADJ/NOPB Datasheet

LM2596S-ADJ/NOPB

Manufacturer Part Number

LM2596S-ADJ/NOPB

Description

IC REG SIMPLE SWITCHER TO-263-5

Manufacturer

National Semiconductor

Series

SIMPLE SWITCHER®r

Type

Step-Down (Buck)r

Datasheets

1.LM2596S-ADJNOPB.pdf (31 pages)

2.LM2587S-ADJNOPB.pdf (28 pages)

3.LM2596S-ADJNOPB.pdf (6 pages)

Specifications of LM2596S-ADJ/NOPB

Internal Switch(s)

Yes

Synchronous Rectifier

Number Of Outputs

Voltage - Output

1.2 ~ 37 V

Current - Output

Frequency - Switching

150kHz

Voltage - Input

4.5 ~ 40 V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

D²Pak, TO-263 (5 leads + tab)

Current, Input Bias

10 nA

Current, Output

3 A

Current, Supply

5 mA

Frequency, Oscillator

150 kHz

Package Type

TO-263

Regulator Type

Buck, Switching

Resistance, Thermal, Junction To Case

2 °C/W

Temperature, Operating, Range

-40 to +125 °C

Voltage, Input

4.5 to 40 V

Voltage, Output

1.2 to 37 V

Primary Input Voltage

40V

No. Of Outputs

Output Voltage

37V

Output Current

No. Of Pins

Operating Temperature Range

-40Â°C To +125Â°C

Msl

MSL 3 - 168 Hours

Filter Terminals

SMD

Rohs Compliant

Yes

For Use With

551011367-041 - BOARD WEBENCH BUILD IT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Lead Free Status / Rohs Status

RoHS Compliant part

Other names

*LM2596S-ADJ
*LM2596S-ADJ/NOPB
LM2596S-ADJ

Available stocks

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Part Number

Manufacturer

Quantity

Price

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Bonase Electronics (HK) Co., Limited

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Download datasheet (145Kb)

LM2596

SIMPLE SWITCHER

3A Step-Down Voltage Regulator

General Description

The LM2596 series of regulators are monolithic integrated

circuits that provide all the active functions for a step-down

(buck) switching regulator, capable of driving a 3A load with

excellent line and load regulation. These devices are avail-

able in fixed output voltages of 3.3V, 5V, 12V, and an adjust-

able output version.

Requiring a minimum number of external components, these

regulators are simple to use and include internal frequency

compensation

The LM2596 series operates at a switching frequency of

150 kHz thus allowing smaller sized filter components than

what would be needed with lower frequency switching regu-

lators. Available in a standard 5-lead TO-220 package with

several different lead bend options, and a 5-lead TO-263

surface mount package.

A standard series of inductors are available from several

different manufacturers optimized for use with the LM2596

series. This feature greatly simplifies the design of

switch-mode power supplies.

Other features include a guaranteed

put voltage under specified input voltage and output load

conditions, and

shutdown is included, featuring typically 80 µA standby cur-

rent. 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

Versions)

SIMPLE SWITCHER

†

, and a fixed-frequency oscillator.

and Switchers Made Simple

15% on the oscillator frequency. External

(Fixed Output Voltage

are registered trademarks of National Semiconductor Corporation.

4% tolerance on out-

Power Converter 150 kHz

Features

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

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

n Available in TO-220 and TO-263 packages

n Guaranteed 3A output load current

n Input voltage range up to 40V

n Requires only 4 external components

n Excellent line and load regulation specifications

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 On-card switching regulators

n Positive to negative converter

Note:

4% max over line and load conditions

†

Patent Number 5,382,918.

typically 80 µA

01258301

Related parts for LM2596S-ADJ/NOPB

LM2596S-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. Power Converter 150 kHz ® Features n 3.3V, 5V, 12V, and adjustable output versions n Adjustable version output voltage range, 1.2V to 37V ± 4% max over line and load conditions ...

Page 2

... Connection Diagrams and Ordering Information Bent and Staggered Leads, Through Hole Package 5-Lead TO-220 (T) Order Number LM2596T-3.3, LM2596T-5.0, LM2596T-12 or LM2596T-ADJ See NS Package Number T05D Surface Mount Package 5-Lead TO-263 (S) 01258302 Order Number LM2596S-3.3, LM2596S-5.0, LM2596S-12 or LM2596S-ADJ See NS Package Number TS5B 2 01258303 ...

Page 3

... 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 ON /OFF Pin Input Voltage Feedback Pin Voltage Output Voltage to Ground (Steady State) Power Dissipation Storage Temperature Range ESD Susceptibility LM2596-3 ...

Page 4

LM2596-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 = 12V All Output Voltage Versions ...

Page 5

... Note 13: Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed circuit board with 2.5 in Note 14: Junction to ambient thermal resistance with the TO-263 package tab soldered to a double sided printed circuit board with 3 in the LM2596S side of the board, and approximately 16 in model in Switchers Made Simple ™ ...

Page 6

... TO-263 Surface Mount Package (S) Order Number LM2596S-3.3, LM2596S-5.0, LM2596S-12 or LM2596S-ADJ NS Package Number TS5B 2. A critical component is any component of a life support device or system whose failure to perform ...

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