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LM2585S-12 |LM2585S12NSN/a183avaiSIMPLE SWITCHER 3-Amp Flyback Regulator
LM2585S-5.0 |LM2585S50NSN/a10avaiSIMPLE SWITCHER 3-Amp Flyback Regulator
LM2585S-ADJ |LM2585SADJNSN/a73avaiSIMPLE SWITCHER 3-Amp Flyback Regulator
LM2585S-ADJ. |LM2585SADJNSN/a26avaiSIMPLE SWITCHER 3-Amp Flyback Regulator
LM2585SX-12 |LM2585SX12NSN/a1500avaiSIMPLE SWITCHER 3-Amp Flyback Regulator
LM2585SX-ADJ |LM2585SXADJNSN/a113avaiSIMPLE SWITCHER 3-Amp Flyback Regulator
LM2585T-5.0 |LM2585T50NSN/a2374avaiSIMPLE SWITCHER 3-Amp Flyback Regulator
LM2585T-ADJ |LM2585TADJNSN/a135avaiSIMPLE SWITCHER 3-Amp Flyback Regulator


LM2585T-5.0 ,SIMPLE SWITCHER 3-Amp Flyback Regulatorfeatures includen Flyback regulatorsoft start mode to reduce in-rush current during start up,curren ..
LM2585T-ADJ ,SIMPLE SWITCHER 3-Amp Flyback RegulatorLM2585 SIMPLE SWITCHER 3A Flyback RegulatorApril 2000LM2585®SIMPLE SWITCHER 3A Flyback Regulator
LM2586S-12 ,SIMPLE SWITCHER 3-Amp Flyback Regulatorapplications. The device is available in 4n NPN output switches 3.0A, can stand off 65Vdifferent ou ..
LM2586S-3.3 ,SIMPLE SWITCHER 3-Amp Flyback RegulatorFeaturesn Requires few external componentsThe LM2586 series of regulators are monolithic integrated ..
LM2586S-5.0 ,SIMPLE SWITCHER 3-Amp Flyback RegulatorFeaturesn Requires few external componentsThe LM2586 series of regulators are monolithic integrated ..
LM2586S-ADJ ,SIMPLE SWITCHER 3-Amp Flyback RegulatorLM2586 SIMPLE SWITCHER 3A Flyback Regulator with ShutdownMay 1996LM2586®SIMPLE SWITCHER 3A Flyback ..
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LM4835MTE ,Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable GainLM4835 Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable GainFebruary 2003LM48 ..
LM4835MTEX ,Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable GainFeaturesand a selectable gain or bass boost, making it optimallyn PC98 Compliantsuitedformultimedia ..
LM4835MTX ,Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable GainGeneral Description Key Specificationsn P at 1% THD+NThe LM4835 is a monolithic integrated circuit ..
LM4836LQ ,Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input MuxApplicationsn Portable and Desktop Computersn Multimedia Monitorsn Portable Radios, PDAs, and Porta ..
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 ..


LM2585S-12-LM2585S-5.0-LM2585S-ADJ-LM2585S-ADJ.-LM2585SX-12-LM2585SX-ADJ-LM2585T-5.0-LM2585T-ADJ
SIMPLE SWITCHER 3-Amp Flyback Regulator
LM2585
SIMPLE SWITCHER® 3A Flyback Regulator
General Description

The LM2585 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 3.0A 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 3.0A, 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 LM2585T-3.3, LM2585T-5.0, LM2585T-12, LM2585T-ADJ
5-Lead TO-263 TS5B LM2585S-3.3, LM2585S-5.0, LM2585S-12, LM2585S-ADJ
5-Lead TO-263 Tape and Reel TS5B LM2585SX-3.3, LM2585SX-5.0, LM2585SX-12,
DS012515-1
April 2000
LM2585
SIMPLE
SWITCHER
Flyback
Regulator
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