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LM2574N-15

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 ProductsFound12parts with similar functions to LM2574N-15
Download Datasheet Parametric Compare View All

LM2574N-15 Overview

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

LM2574N-15 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 voltage18 V
Nominal input voltage30 V
JESD-30 codeR-PDIP-T8
length9.78 mm
Number of functions1
Number of terminals8
Maximum output current1.8 A
Nominal output voltage15 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-15 Related Products

LM2574N-15 LM2574N-ADJ LM2574N-12 LM2574N-3.3 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 18 V 7 V 15 V 4.75 V 7 V 4.75 V 4.75 V
Nominal input voltage 30 V 12 V 25 V 12 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 15 V 1.23 V 12 V 3.3 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 - -

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