EEWORLDEEWORLDEEWORLD

Part Number

Search

LM2574N-3.3

Description
Switching Regulator, 1.8A, 63kHz Switching Freq-Max, PDIP8, PLASTIC, DIP-8
CategoryPower/power management    The power supply circuit   
File Size396KB,24 Pages
ManufacturerMotorola ( NXP )
Websitehttps://www.nxp.com
Related ProductsFound20parts with similar functions to LM2574N-3.3
Download Datasheet Parametric Compare View All

LM2574N-3.3 Overview

Switching Regulator, 1.8A, 63kHz Switching Freq-Max, PDIP8, PLASTIC, DIP-8

LM2574N-3.3 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
package instructionDIP,
Reach Compliance Codeunknown
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
Maximum input voltage40 V
Minimum input voltage4.75 V
Nominal input voltage12 V
JESD-30 codeR-PDIP-T8
length9.78 mm
Number of functions1
Number of terminals8
Maximum output current1.8 A
Nominal output voltage3.3 V
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height4.45 mm
surface mountNO
Switch configurationBUCK
Maximum switching frequency63 kHz
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
Base Number Matches1
Order this document by LM2574/D
LM2574
Easy Switcher
0.5 A
Step-Down Voltage Regulator
The LM2574 series of regulators are monolithic integrated circuits ideally
suited for easy and convenient design of a step–down switching regulator
(buck converter). All circuits of this series are capable of driving a 0.5 A load
with excellent line and load regulation. These devices are available in fixed
output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.
These regulators were designed to minimize the number of external
components to simplify the power supply design. Standard series of
inductors optimized for use with the LM2574 are offered by several different
inductor manufacturers.
Since the LM2574 converter is a switch–mode power supply, its efficiency
is significantly higher in comparison with popular three–terminal linear
regulators, especially with higher input voltages. In most cases, the power
dissipated by the LM2574 regulator is so low, that the copper traces on the
printed circuit board are normally the only heatsink needed and no additional
heatsinking is required.
The LM2574 features include a guaranteed
±4%
tolerance on output
voltage within specified input voltages and output load conditions, and
±10%
on the oscillator frequency (±2% over 0°C to +125°C). External shutdown is
included, featuring 60
µA
(typical) standby current. The output switch
includes cycle–by–cycle current limiting, as well as thermal shutdown for full
protection under fault conditions.
Features
EASY SWITCHER™
0.5 A STEP–DOWN
VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
16
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO–16L)
8
1
N SUFFIX
PLASTIC PACKAGE
CASE 626
(DIP–8)
PIN CONNECTIONS
*
*
FB
Sig Gnd
ON/OFF
Pwr Gnd
*
*
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions
Adjustable Version Output Voltage Range, 1.23 to 37 V
±4%
max over
Line and Load Conditions
Guaranteed 0.5 A Output Current
Wide Input Voltage Range: 4.75 to 40 V
Requires Only 4 External Components
52 kHz Fixed Frequency Internal Oscillator
TTL Shutdown Capability, Low Power Standby Mode
High Efficiency
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit Protection
*
*
Output
*
Vin
*
*
*
(Top View)
FB
Sig Gnd
ON/OFF
Pwr Gnd
1
2
3
4
8
7
6
5
*
Output
*
Vin
(Top View)
* No internal connection, but should be soldered to
*
PC board for best heat transfer.
Applications
Simple and High–Efficiency Step–Down (Buck) Regulators
Efficient Pre–regulator for Linear Regulators
On–Card Switching Regulators
Positive to Negative Converters (Buck–Boost)
Negative Step–Up Converters
Power Supply for Battery Chargers
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
LM2574–3.3
LM2574–5
LM2574–12
LM2574–15
LM2574–ADJ
3.3 V
5.0 V
12 V
15 V
1.23 V to 37 V
ORDERING INFORMATION
Device
LM2574DW–ADJ
LM2574N–XX
TA = –40° to +125°C
Operating
Temperature Range
Package
SO–16L
DIP–8
XX = Voltage Option, i.e, 3.3, 5, 12, 15 V; and ADJ for
Adjustable Output.
©
Motorola, Inc. 1999
Rev 2, 07/1999

LM2574N-3.3 Related Products

LM2574N-3.3 LM2574N-ADJ LM2574N-12 LM2574N-15 LM2574N-5 LM2574DW-ADJ LM2574DW-ADJR2
Description Switching Regulator, 1.8A, 63kHz Switching Freq-Max, PDIP8, PLASTIC, DIP-8 1.8A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PDIP8, PLASTIC, DIP-8 Switching Regulator, 1.8A, 63kHz Switching Freq-Max, PDIP8, PLASTIC, DIP-8 Switching Regulator, 1.8A, 63kHz Switching Freq-Max, PDIP8, PLASTIC, DIP-8 Switching Regulator, 1.8A, 63kHz Switching Freq-Max, PDIP8, PLASTIC, DIP-8 1.8A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PDSO16, PLASTIC, SO-16 1.8A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PDSO16, PLASTIC, SO-16
package instruction DIP, DIP, DIP, DIP, DIP, SOP, SOP16,.4 SOP,
Reach Compliance Code unknown unknown unknown unknown unknown unknown unknown
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR
Maximum input voltage 40 V 40 V 40 V 40 V 40 V 40 V 40 V
Minimum input voltage 4.75 V 7 V 15 V 18 V 7 V 4.75 V 4.75 V
Nominal input voltage 12 V 12 V 25 V 30 V 12 V 12 V 12 V
JESD-30 code R-PDIP-T8 R-PDIP-T8 R-PDIP-T8 R-PDIP-T8 R-PDIP-T8 R-PDSO-G16 R-PDSO-G16
length 9.78 mm 9.78 mm 9.78 mm 9.78 mm 9.78 mm 10.3 mm 10.3 mm
Number of functions 1 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 16 16
Maximum output current 1.8 A 1.8 A 1.8 A 1.8 A 1.8 A 1.8 A 1.8 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP DIP DIP DIP DIP SOP SOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form IN-LINE IN-LINE IN-LINE IN-LINE IN-LINE SMALL OUTLINE SMALL OUTLINE
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 4.45 mm 4.45 mm 4.45 mm 4.45 mm 4.45 mm 2.65 mm 2.65 mm
surface mount NO NO NO NO NO YES YES
Switch configuration BUCK BUCK BUCK BUCK BUCK BUCK BUCK
Maximum switching frequency 63 kHz 63 kHz 63 kHz 63 kHz 63 kHz 63 kHz 63 kHz
Terminal form THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE GULL WING GULL WING
Terminal pitch 2.54 mm 2.54 mm 2.54 mm 2.54 mm 2.54 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL
width 7.62 mm 7.62 mm 7.62 mm 7.62 mm 7.62 mm 7.5 mm 7.5 mm
Is it Rohs certified? incompatible - incompatible incompatible incompatible - -
Nominal output voltage 3.3 V 1.23 V 12 V 15 V 5 V - -
Peak Reflow Temperature (Celsius) NOT SPECIFIED - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED - -
Maximum time at peak reflow temperature NOT SPECIFIED - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED - -
Base Number Matches 1 1 1 1 1 - -

LM2574N-3.3 Similar Products

Part Number Manufacturer Description
LM2574N-3.3/NOPB Texas Instruments(德州仪器) SIMPLE SWITCHER 4V to 40V, 0.5A Step-Down DC/DC Switching Regulator 8-PDIP -40 to 125
LM2574N-3.3 Rochester Electronics 1.8A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PDIP8, PLASTIC, DIP-8
LM2574N-3.3G Rochester Electronics 1.8A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PDIP8, LEAD FREE, PLASTIC, DIP-8
LM2574HVN-3.3 Rochester Electronics 1.8A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PDIP8, DIP-8
LM2574-3.3YN Microchip(微芯科技) Conv DC-DC 4V to 40V Step Down Single-Out 3.3V 0.5A 8-Pin PDIP Tube
MIC4574-5.0YN Microchip(微芯科技) 200kHz Simple 0.5A Buck Regulator
LM2574N-5 ON Semiconductor(安森美) 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDIP8
LM2594HVN-5.0/NOPB Texas Instruments(德州仪器) 可输出电流:500mA 开关工作频率:150kHz 输出类型:Fixed 输出电压的路数:1 功能类型:Step-Down 输出配置:Positive 电源转换器 150 kHz 0.5A 降压电压稳压器
LM2594N-5.0/NOPB Texas Instruments(德州仪器) SIMPLE SWITCHER® 40V, 500mA Low Component Count Step-Down Regulator 8-PDIP -40 to 125
LM2574HVN-5.0/NOPB Texas Instruments(德州仪器) SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator 8-PDIP -40 to 125
LM2574N-5.0/NOPB Texas Instruments(德州仪器) 可输出电流:500mA 开关工作频率:52kHz 输出类型:Fixed 输出电压的路数:1 功能类型:Step-Down 输出配置:Positive LM2574/LM2574HV SIMPLE SWITCHER? 0.5A Step-Down Voltage Regulator
5962-9167201QEA Rochester Electronics 3 A SWITCHING REGULATOR, 58 kHz SWITCHING FREQ-MAX, CDIP16, CERDIP-16
LM2574-5.0YN Microchip(微芯科技) Conv DC-DC 4V to 40V Step Down Single-Out 5V 0.5A 8-Pin PDIP Tube
LM2574N-5G ON Semiconductor(安森美) 5.0V
LM2575-5.0BN Rochester Electronics 3.2A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PDIP16, PLASTIC, DIP-16
TC2574-5.0VPA Microchip(微芯科技) 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDIP8, PLASTIC, DIP-8
LM2575-5.0YN Microchip(微芯科技) IC REG BUCK 5V 1A 16DIP
LM2594HVN-5.0 National Semiconductor(TI ) 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PDSO8
LM22674MRX-ADJ Texas Instruments(德州仪器) 0.9A SWITCHING REGULATOR, 600kHz SWITCHING FREQ-MAX, PDSO8, PLASTIC, PSOP-8
LM2594N-5.0 National Semiconductor(TI ) 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PDSO8
The ndis hook intercepts and sends multiple packets.
When ndis hook intercepts a data packet, it normally performs relevant filtering and then sends it to the system. However, when I need to send such a data packet, it reaches the upper layer once and t...
yjx7971 Embedded System
【ufun learning】cadence source file
Finally found the complete one and share it with you all....
liu583685 stm32/stm8
attiny13 programming failure
When I use usbasp to burn attiny13, the text in the picture appears. When burning other microcontrollers, it works normally. Please help me....
宇105 Microchip MCU
Prepare to draw a 2440 board
Anyone has experience in this area? Let's discuss it together. Mini2440 has relevant schematics and PCB libraries...
chenzhufly ARM Technology
Problems with stepldr compilation
stepldr compiles and generates stepldr.bin 4kB, stepldr.exe 7kB, stepldr.map 3kB, stepldr.nb0 4kB, stepldr.nb1 4kB, stepldr.nb2 4kB. What I want to ask is, why are there three stepldr.nbx generated? W...
jasonliu Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2822  814  695  1510  2019  57  17  14  31  41 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号