LT1086
1.5A Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 3.6V, 5V, 12V
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Overview
Features and Benefits
- 3-Terminal Adjustable or Fixed 2.85V, 3.3V, 3.6V, 5V, 12V
- Output Current of 1.5A, (0.5A for LT1086H)
- Operates Down to 1V Dropout
- Guaranteed Dropout Voltage at Multiple Current Levels
- Line Regulation: 0.015%
- Load Regulation: 0.1%
- 100% Thermal Limit Functional Test
- Ripple Rejection >75dB
- Available in 3-Pin TO-220 and 3-Pin DD Package
Product Details
The LT1086 is designed to provide up to 1.5A output current. All internal circuitry is designed to operate down to 1V input-to-output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at several operating points up to a maximum of 1.5V at maximum output current. Dropout decreases at lower load currents. On-chip trimming adjusts the reference/ouput voltage to 1%. Current limit is also trimmed, minimizing the stress on both the regulator and powersource circuitry under overload conditions.
The LT1086 is pin compatible with older 3-terminal adjustableregulators. A minimum 10µF output capacitor isrequired on these devices.
The LT1086 offers excellent line and load regulation specifications and ripple rejection exceeds 75dB even at the maximum load current of 1.5A. The LT1086 is floating architecture with a composite NPN output stage. All of the quiescent current and the drive current for the output stage flows to the load increasing efficiency.
The LT1086 is available in a 3-pin TO-220 package and a space-saving surface mountable 3-pin DD package.
Applications
- SCSI-2 Active Terminator
- High Efficiency Linear Regulators
- Post Regulators for Switching Supplies
- Constant Current Regulators
- Battery Chargers
- Microprocessor Supply
Product Categories
Markets and Technologies
Product Lifecycle
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.
Documentation & Resources
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R006 Reliability Data3/26/2018
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AN29 - Some Thoughts on DC-DC Converters3/8/2013
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AN42 - Voltage Reference Circuit Collection2/3/2011
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AN35 - Step Down Switching Regulators9/20/2010
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AN32 - High Efficiency Linear Regulators9/8/2010
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AN30 - Switching Regulator Circuit Collection10/31/2008
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AN67 - Linear Technology Magazine Circuit Collection, Volume III8/20/2007
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AN64 - Using the LTC1325 Battery Management IC:8/20/2007
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AN58 - 5V to 3.3V Converters for Microprocessor Systems8/20/2007
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AN31 - Linear Circuits for Digital Systems8/20/2007
Tools & Simulations
LTspice
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
LT1086
LT1086-12
LT1086-2.85
LT1086-3.3
LT1086-3.6
LT1086-5
LT1086H
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.
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
LT1086 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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