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LM2587S-12 |LM2587S12NSN/a45avaiSIMPLE SWITCHER® 5A Flyback Regulator
LM2587S-5.0 |LM2587S50NSN/a5avaiSIMPLE SWITCHER® 5A Flyback Regulator
LM2587S-ADJ |LM2587SADJNSN/a1000avaiSIMPLE SWITCHER® 5A Flyback Regulator
LM2587SX-ADJ |LM2587SXADJNSN/a820avaiSIMPLE SWITCHER® 5A Flyback Regulator
LM2587T-5.0 |LM2587T50NSN/a2avaiSIMPLE SWITCHER® 5A Flyback Regulator
LM2587T-ADJ |LM2587TADJNSN/a239avaiSIMPLE SWITCHER® 5A Flyback Regulator


LM2587S-ADJ ,SIMPLE SWITCHER® 5A Flyback RegulatorLM2587 SIMPLE SWITCHER 5A Flyback RegulatorFebruary 2004LM2587®SIMPLE SWITCHER 5A Flyback Regulator
LM2587S-ADJ/NOPB ,SIMPLE SWITCHER? 4V to 40V, 5A Step-Up Wide Vin Flyback Regulator 5-DDPAK/TO-263 -40 to 125features include soft startOver Line and Load Conditionsmode to reduce in-rush current during start ..
LM2587SX-ADJ ,SIMPLE SWITCHER® 5A Flyback RegulatorElectrical Characteristics (Continued)Symbol Parameters Conditions Typical Min Max UnitsVoltage V = ..
LM2587T-5.0 ,SIMPLE SWITCHER® 5A Flyback RegulatorApplicationspermits the use of small magnetics. Other
LM2587T-ADJ ,SIMPLE SWITCHER® 5A Flyback Regulatorfeatures includen Flyback regulatorsoft start mode to reduce in-rush current during start up,curren ..
LM2587T-ADJ/NOPB ,SIMPLE SWITCHER? 4V to 40V, 5A Step-Up Wide Vin Flyback Regulator 5-TO-220 -40 to 125FEATURES DESCRIPTIONThe LM2587 series of regulators are monolithic23• Requires Few External Compone ..
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LM4836LQ ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input MuxElectrical Characteristics for Entire IC(Notes 8, 12) The following specifications apply for V = 5V ..
LM4836LQX ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input MuxElectrical Characteristics for Single-Ended Mode Operation (Continued)(Notes 8, 12) The following s ..
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LM4836MTE ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input MuxGeneral Description Key Specificationsn P at 1% THD+NThe LM4836 is a monolithic integrated circuit ..
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LM2587S-12-LM2587S-5.0-LM2587S-ADJ-LM2587SX-ADJ-LM2587T-5.0-LM2587T-ADJ
SIMPLE SWITCHER® 5A Flyback Regulator
LM2587
SIMPLE SWITCHER® 5A Flyback Regulator
General Description

The LM2587 seriesof regulators are monolithic integrated
circuits specifically designedfor flyback, step-up (boost), and
forward converter applications. The deviceis availablein4
different output voltage versions: 3.3V, 5.0V, 12V, and ad-
justable.
Requiringa minimum numberof external components, these
regulators are cost effective, and simpleto use. Includedin
the datasheet are typical circuitsof boost and flyback regu-
lators. Also listed are selector guidesfor diodes and capaci-
tors anda familyof standard inductors and flyback trans-
formers designedto work with these switching regulators.
The power switchisa 5.0A NPN device that can stand-off
65V. Protecting the power switch are current and thermal
limiting circuits, andan undervoltage lockout circuit. ThisIC
containsa 100 kHz fixed-frequency internal oscillator that
permits the useof small magnetics. Other features include
soft start modeto reduce in-rush current during start up,
current mode controlfor improved rejectionof input voltage
and output load transients and cycle-by-cycle current limit-
ing.An output voltage toleranceof ±4%, within specified
input voltages and output load conditions,is guaranteedfor
the power supply system.
Features
Requires few external components Familyof standard inductors and transformers NPN output switches 5.0A, can standoff 65V Wide input voltage range:4Vto 40V Current-mode operationfor improved transient
response, line regulation, and current limit 100 kHz switching frequency Internal soft-start function reduces in-rush current during
start-up Output transistor protectedby current limit, under
voltage lockout, and thermal shutdown System Output Voltage Toleranceof ±4% max over line
and load conditions
Typical Applications
Flyback regulator Multiple-output regulator Simple boost regulator Forward converter
Flyback Regulator

Ordering Information
Package Type NSC Package Order Number
Drawing
5-Lead TO-220 Bent, Staggered Leads T05D LM2587T-3.3, LM2587T-5.0, LM2587T-12, LM2587T-ADJ
5-Lead TO-263 TS5B LM2587S-3.3, LM2587S-5.0, LM2587S-12, LM2587S-ADJ
5-Lead TO-263 Tape and Reel TS5B LM2587SX-3.3, LM2587SX-5.0, LM2587SX-12,
LM2587SX-ADJ
February 2004
LM2587
SIMPLE
SWITCHER
Flyback
Regulator
ic,good price


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