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Partno	Mfg	Dc	Qty	Available	Descript
LM2585SX-ADJ/NOPB \|LM2585SXADJNOPB	NS	N/a	10000	avai	SIMPLE SWITCHER? 4V to 40V, 3A Step-Up Wide Vin Flyback Regulator 5-DDPAK/TO-263 -40 to 125

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LM2585SX-ADJ/NOPB
SIMPLE SWITCHER? 4V to 40V, 3A Step-Up Wide Vin Flyback Regulator 5-DDPAK/TO-263 -40 to 125
LM2585
www.ti.com SNVS120F–APRIL 2000–REVISED APRIL 2013
LM2585 SIMPLE SWITCHER® 3A Flyback Regulator
Checkfor Samples: LM2585
1FEATURES DESCRIPTION
The LM2585 series of regulators are monolithic
234• Requires Few External Components integrated circuits specifically designed for flyback,• Familyof Standard Inductors and step-up (boost), and forward converter applications.Transformers The deviceis availablein4 different output voltage NPN Output Switches 3.0A, Can Stand Off 65V versions: 3.3V, 5.0V, 12V, and adjustable. Wide Input Voltage Range: 4Vto 40V Requiring a minimum number of external
components, these regulators are cost effective, and• Current-mode Operation for Improved
simpleto use. Includedin the datasheet are typicalTransient Response, Line Regulation, and circuitsof boost and flyback regulators. Also listedCurrent Limit are selector guides for diodes and capacitors anda• 100 kHz Switching Frequency familyof standard inductors and flyback transformers Internal Soft-start Function Reduces In-rush designedto work with these switching regulators.
Current During Start-up The power switchisa 3.0A NPN device that can• Output Transistor Protected by Current Limit, stand-off 65V. Protecting the power switch are currentUnder Voltage Lockout, and Thermal and thermal limiting circuits, and an undervoltage
Shutdown lockout circuit. This IC containsa 100 kHz fixed-
frequency internal oscillator that permits the useof• System Output Voltage Toleranceof ±4% Max small magnetics. Other features include soft startOver Line and Load Conditions mode to reduce in-rush current during start up,
current mode control for improved rejectionof inputTYPICAL APPLICATIONS voltage and output load transients and cycle-by-cycle Flyback Regulator current limiting. An output voltage toleranceof ±4%,
within specified input voltages and output load• Multiple-output Regulator conditions,is specified for the power supply system.• Simple Boost Regulator Forward Converter
Connection Diagrams
Figure3. Bent, Staggered Leads
5-Lead TO-220
Side View Staggered Leads See NDH005D Package TO-220
Figure
Side
See KTT Package

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