1. Products
  2. Power Management
  3. LDO Linear Regulators
  4. Positive Linear Regulators (LDO)
  5. LT1585A-1.5


Features and Benefits

  • Fast Transient Response
  • Guaranteed Dropout Voltage at Multiple Currents
  • Load Regulation: 0.05% Typ
  • Trimmed Current Limit
  • On-Chip Thermal Limiting

Product Details

The LT1585-1.5/LT1585A-1.5 are low dropout, 3-terminal regulators with 4.6A and 5A output current capability respectively, and a fixed 1.5V output voltage. The designs are optimized for low voltage applications where transient response and minimum input voltage are critical. Similar to the LT1084, they have lower dropout and faster transient response. These improvements make them ideal for low voltage microprocessor applications, especially as the regulator in an Intel processor GTL+ supply.

Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload that creates excessive junction temperatures.

The LT1585-1.5/LT1585A-1.5 are available in the through-hole 3-pin TO-220 power package and 3-pin plastic DD.

Output Current Output Voltage Options
LT1584, -3.3, -3.38, -3.45, -3.6 7A Adj, 3.3V, 3.38V, 3.45V, 3.6V
LT1585, -3.3, -3.38, -3.45, -3.6 4.6A Adj, 3.3V, 3.38V, 3.45V, 3.6V
LT1585A, LT1585A-3.3 5A Adj, 3.3V
LT1585-1.5, LT1585A-1.5 4.6A/5A Fixed 1.5V
LT1587, -3.3, -3.45, -3.6 3A Adj. 3.3V, 3.45V, 3.6V
LT1587-1.5 3A Fixed 1.5V


  • GTL+ Power Supply
  • Low Voltage Logic Supplies
  • Battery-Powered Circuitry

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations


LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Models for the following parts are available in LTspice:


Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LT1585ACM-1.5#PBF Material Declaration Reliability Data 3-Lead DD Pak
LT1585ACM-1.5#TRPBF Material Declaration Reliability Data 3-Lead DD Pak
LT1585ACT-1.5#PBF Material Declaration Reliability Data 3-Lead TO-220
Wafer Fabrication Data R385 Reliability Data

PCN-PDN Information

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Sample & Buy

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Buy Now Pricing

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List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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