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LM2587S-5.0 Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças LM2587S-5.0
Descrição Electrónicos  LM2587 SIMPLE SWITCHER 5A Flyback Regulator
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM2587S-5.0 Folha de dados(HTML) 1 Page - Texas Instruments

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LM2587
www.ti.com
SNVS115D – APRIL 2000 – REVISED APRIL 2013
LM2587 SIMPLE SWITCHER® 5A Flyback Regulator
Check for Samples: LM2587
1
FEATURES
DESCRIPTION
The LM2587 series of regulators are monolithic
23
Requires Few External Components
integrated circuits specifically designed for flyback,
Family of Standard Inductors and
step-up (boost), and forward converter applications.
Transformers
The device is available in 4 different output voltage
NPN Output Switches 5.0A, can Stand Off 65V
versions: 3.3V, 5.0V, 12V, and adjustable.
Wide Input Voltage Range: 4V to 40V
Requiring
a
minimum
number
of
external
components, these regulators are cost effective, and
Current-Mode Operation for Improved
simple to use. Included in the datasheet are typical
Transient Response, Line Regulation, and
circuits of boost and flyback regulators. Also listed
Current Limit
are selector guides for diodes and capacitors and a
100 kHz Switching Frequency
family of standard inductors and flyback transformers
Internal Soft-Start Function Reduces In-Rush
designed to work with these switching regulators.
Current During Start-Up
The power switch is a 5.0A NPN device that can
Output Transistor Protected by Current Limit,
stand-off 65V. Protecting the power switch are current
Under Voltage Lockout, and Thermal
and thermal limiting circuits, and an undervoltage
Shutdown
lockout circuit. This IC contains a 100 kHz fixed-
frequency internal oscillator that permits the use of
System Output Voltage Tolerance of ±4% Max
small magnetics. Other features include soft start
Over Line and Load Conditions
mode to reduce in-rush current during start up,
current mode control for improved rejection of input
TYPICAL APPLICATIONS
voltage and output load transients and cycle-by-cycle
Flyback Regulator
current limiting. An output voltage tolerance of ±4%,
within specified input voltages and output load
Multiple-Output Regulator
conditions, is ensured for the power supply system.
Simple Boost Regulator
Forward Converter
Flyback Regulator
Figure 1.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
SIMPLE SWITCHER, Switchers Made Simple are registered trademarks of Texas Instruments.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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