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4-V to 40-V, 3-A step-up wide VIN flyback regulator

Out of stock
Inventory: In stock


Qty Price (USD)
1-99 6.326
100-249 5.157
250-999 4.053
1,000+ 3.438

Quality information

RoHS Exempt
REACH Affected
Lead finish / Ball material SN
MSL rating / Peak reflow Level-1-NA-UNLIM
Quality, reliability
& packaging information info-circle

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins TO-220 (NDH) | 5
Package qty | Carrier: 45 | TUBE
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the LM2585

  • Requires Few External Components
  • Family of Standard Inductors and Transformers
  • NPN Output Switches 3 A, Can Stand Off 65 V
  • Wide Input Voltage Range: 4 V to 40 V
  • Current-mode Operation for 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 Protected by Current Limit, Undervoltage Lockout, and Thermal Shutdown
  • System Output Voltage Tolerance of ±4% Maximum Over Line and Load Conditions
  • Create a Custom Design Using the LM2585 With the WEBENCH® Power Designer

Description for the LM2585

The LM2585 series of regulators are monolithic integrated circuits specifically designedfor flyback, step-up (boost), and forward converter applications. The device is available in 4different output voltage versions: 3.3 V, 5 V, 12 V, and adjustable.

Requiring a minimum number of external components, these regulators are cost effectiveand simple to use. Included in the datasheet are typical circuits of boost and flyback regulators.Also listed are selector guides for diodes and capacitors and a family of standard inductors andflyback transformers designed to work with these switching regulators.

The power switch is a 3-A NPN device that can stand off 65 V. Protecting the power switchare current and thermal limiting circuits, and an undervoltage lockout circuit. This IC contains a100-kHz fixed-frequency internal oscillator that permits the use of small magnetics. Other featuresinclude soft start mode to reduce in-rush current during start-up, current mode control forimproved rejection of input voltage and output load transients and cycle-by-cycle current limiting.An output voltage tolerance of ±4%, within specified input voltages and output load conditions, isspecified for the power supply system.

Inventory: In stock


Qty Price (USD)
1-99 6.326
100-249 5.157
250-999 4.053
1,000+ 3.438

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships  tube or tray  devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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