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  5. LT1963A

Data Sheet Rev. G
PDF
JP

Alternative Parts

LT1764A
LT1764A

3A, Fast Transient Response, Low Noise, LDO Regulators

LT3081
LT3081

1.5A Single Resistor Rugged Linear Regulator with Monitors

Overview

Features and Benefits

  • Optimized for Fast Transient Response
  • Output Current: 1.5A
  • Dropout Voltage: 340mV
  • Low Noise: 40μVRMS (10Hz to 100kHz)
  • 1mA Quiescent Current
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
  • Adjustable Output from 1.21V to 20V
  • <1μA Quiescent Current in Shutdown
  • Stable with 10μF Output Capacitor
  • Stable with Ceramic Capacitors
  • Reverse Battery Protection
  • No Reverse Current
  • Thermal Limiting
  • 5-Lead TO-220, DD, 3-Lead SOT-223 and 8-Lead SO Packages
  • AEC-Q100 Qualified for Automotive Applications

Product Details

The LT1963A series are low dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to <1μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the LT1963A regulators have very low output noise which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21V to 20V. The LT1963A regulators are stable with output capacitors as low as 10μF. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The devices are available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable device with a 1.21V reference voltage. The LT1963A regulators are available in 5-lead TO-220, DD, 3‑lead SOT-223, 8-lead SO and 16-lead TSSOP packages.


 Features
LT1963 -
LT1963A Stable With Ceramic Output Capacitors

APPLICATIONS

  • 3.3V to 2.5V Logic Power Supplies
  • Post Regulator for Switching Supplies

Product Categories

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Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Documentation & Resources

  • View All (7)
  • Data Sheets (1)
  • Reliability Data (1)
  • Application Notes (1)
  • Solutions Bulletins & Brochures (1)
  • Technical Articles (3)
    • Document Type

    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.

    LTspice

    LTspice Simulations

    LT1963A Demo Circuit - Low Noise, Fast Transient Response LDO Regulator (10V to 5V@1.5A)

    Models for the following parts are available in LTspice:

    LT1963
    LT1963-1.5
    LT1963-1.8
    LT1963-2.5
    LT1963-3.3
    LT1963A
    LT1963A-1.5
    LT1963A-1.8
    LT1963A-2.5
    LT1963A-3.3

    Reference Designs (1)

    Product Recommendations

    LT1963A Companion Parts

    Recommended Related Parts

    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
    LT1963AEFE#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE-1.5#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE-1.5#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE-1.8#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE-1.8#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE-2.5#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE-2.5#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE-3.3#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEFE-3.3#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AEQ#PBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-1.5#PBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-1.5#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-1.8 Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-1.8#PBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-1.8#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-2.5#PBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-2.5#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-3.3#PBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AEQ-3.3#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AES8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8-1.5#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8-1.5#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8-1.8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8-1.8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8-2.5#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8-2.5#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8-3.3#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AES8-3.3#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AEST-1.5#PBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-1.5#TRPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-1.5#WPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-1.5#WTRPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-1.8#PBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-1.8#TRPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-1.8#WPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-1.8#WTRPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-2.5#PBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-2.5#TRPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-2.5#WPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-2.5#WTRPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-3.3#PBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-3.3#TRPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-3.3#WPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AEST-3.3#WTRPBF Material Declaration Reliability Data 3-Lead SOT-223
    LT1963AET#06PBF Material Declaration Reliability Data 5-Lead TO-220 (Flow 06)
    LT1963AET#PBF Material Declaration Reliability Data 5-Lead TO-220
    LT1963AET-1.5#06PBF Material Declaration Reliability Data 5-Lead TO-220 (Flow 06)
    LT1963AET-1.5#PBF Material Declaration Reliability Data 5-Lead TO-220
    LT1963AET-1.8#06PBF Material Declaration Reliability Data 5-Lead TO-220 (Flow 06)
    LT1963AET-1.8#30PBF Material Declaration Reliability Data 5-Lead TO-220 (Flow 30)
    LT1963AET-1.8#PBF Material Declaration Reliability Data 5-Lead TO-220
    LT1963AET-2.5#06PBF Material Declaration Reliability Data 5-Lead TO-220 (Flow 06)
    LT1963AET-2.5#30PBF Material Declaration Reliability Data 5-Lead TO-220 (Flow 30)
    LT1963AET-2.5#PBF Material Declaration Reliability Data 5-Lead TO-220
    LT1963AET-3.3#06PBF Material Declaration Reliability Data 5-Lead TO-220 (Flow 06)
    LT1963AET-3.3#30PBF Material Declaration Reliability Data 5-Lead TO-220 (Flow 30)
    LT1963AET-3.3#PBF Material Declaration Reliability Data 5-Lead TO-220
    LT1963AIFE#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AIFE#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT1963AIQ#PBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AIQ#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AIS8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AIS8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LT1963AIT#PBF Material Declaration Reliability Data 5-Lead TO-220
    LT1963AMPQ#PBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AMPQ#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
    LT1963AMPS8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    Wafer Fabrication Data R386 Reliability Data

    PCN-PDN Information

    Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

    Select Model for PCN Information
    • LT1963AEFE#PBF Production
    • LT1963AEFE#TRPBF Production
    • LT1963AEFE-1.5#PBF Production
    • LT1963AEFE-1.5#TRPBF Production
    • LT1963AEFE-1.8#PBF Production
    • LT1963AEFE-1.8#TRPBF Production
    • LT1963AEFE-2.5#PBF Production
    • LT1963AEFE-2.5#TRPBF Production
    • LT1963AEFE-3.3#PBF Production
    • LT1963AEFE-3.3#TRPBF Production
    • LT1963AEQ#PBF Production
    • LT1963AEQ#TRPBF Production
    • LT1963AEQ-1.5#PBF Production
    • LT1963AEQ-1.5#TRPBF Production
    • LT1963AEQ-1.8 Production
    • LT1963AEQ-1.8#PBF Production
    • LT1963AEQ-1.8#TRPBF Production
    • LT1963AEQ-2.5#PBF Production
    • LT1963AEQ-2.5#TRPBF Production
    • LT1963AEQ-3.3#PBF Production
    • LT1963AEQ-3.3#TRPBF Production
    • LT1963AES8#PBF Production
    • LT1963AES8#TRPBF Production
    • LT1963AES8-1.5#PBF Production
    • LT1963AES8-1.5#TRPBF Production
    • LT1963AES8-1.8#PBF Production
    • LT1963AES8-1.8#TRPBF Production
    • LT1963AES8-2.5#PBF Production
    • LT1963AES8-2.5#TRPBF Production
    • LT1963AES8-3.3#PBF Production
    • LT1963AES8-3.3#TRPBF Production
    • LT1963AET#06PBF Production
    • LT1963AET#PBF Production
    • LT1963AET-1.5#06PBF Production
    • LT1963AET-1.5#PBF Production
    • LT1963AET-1.8#06PBF Production
    • LT1963AET-1.8#30PBF Production
    • LT1963AET-1.8#PBF Production
    • LT1963AET-2.5#06PBF Production
    • LT1963AET-2.5#30PBF Production
    • LT1963AET-2.5#PBF Production
    • LT1963AET-3.3#06PBF Production
    • LT1963AET-3.3#30PBF Production
    • LT1963AET-3.3#PBF Production
    • LT1963AIFE#PBF Production
    • LT1963AIFE#TRPBF Production
    • LT1963AIQ#PBF Production
    • LT1963AIQ#TRPBF Production
    • LT1963AIS8#PBF Production
    • LT1963AIS8#TRPBF Production
    • LT1963AIT#PBF Production
    • LT1963AMPQ#PBF Production
    • LT1963AMPQ#TRPBF Production
    • LT1963AMPS8#PBF Production

    Support & Discussions

    LT1963A Discussions

    RE: LT1963A thermal resistance from junction to case.
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