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Alternative Parts

LT3007 Series
LT3007 Series

3μA IQ, 20mA, 45V Low Dropout Fault Tolerant Linear Regulators

LT3008 Series
LT3008 Series

3μA IQ, 20mA, 45V Low Dropout Linear Regulators

Overview

Features and Benefits

  • Ultralow Quiescent Current: 3μA
  • Input Voltage Range: 1.6V to 20V
  • Output Current: 20mA
  • Dropout Voltage: 280mV
  • Adjustable Output (VADJ = VOUT(MIN) = 600mV)
  • Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V
  • Output Tolerance: ±2% Over Load, Line and Temperature
  • Stable with Low ESR, Ceramic Output Capacitors (1μF minimum)
  • Shutdown Current: <1μA
  • Current Limit Protection
  • Reverse-Battery Protection
  • Thermal Limit Protection
  • 8-Lead SC70 and 2mm × 2mm DFN Packages

Product Details

The LT3009 Series are micropower, low dropout voltage (LDO) linear regulators. The devices supply 20mA output current with a dropout voltage of 280mV. No-load quiescent current is 3μA. Ground pin current remains at less than 5% of output current as load increases. In shutdown, quiescent current is less than 1μA.

The LT3009 regulators optimize stability and transient response with low ESR ceramic capacitors, requiring a minimum of only 1μF. The regulators do not require the . addition of ESR as is common with other regulators. Internal protection circuitry includes current limiting, thermal limiting, reverse-battery protection and reverse-current protection.

The LT3009 Series are ideal for applications that require moderate output drive capability coupled with ultralow standby power consumption. The device is available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V, and as an adjustable device with an output voltage range down to the 600mV reference. The LT3009 is available in the 6-lead DFN and 8-lead SC70 packages.

Applications

  • Low Current Battery-Powered Systems
  • Keep-Alive Power Supplies
  • Remote Monitoring
    • Utility Meters
    • Hotel Door Locks

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Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
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  • User Guides (1)
  • Solutions Bulletins & Brochures (1)
  • Videos (1)
  • Press Releases (1)
  • Technical Articles (3)
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    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

    LTC2955 / LTC4412 / LT3009-3.3 Demo Circuit - Pushbutton On/Off Control with Automatic Turn-On When 12V Applied (12V or 3.6V Battery Backup to 3.3V @ 20mA)
    LT3009 Demo Circuit - 3µA IQ, 20mA LDP Linear Regulator (20V to 3.3V @ 20mA)

    Models for the following parts are available in LTspice:

    LT3009
    LT3009-1.2
    LT3009-1.8
    LT3009-2.5
    LT3009-3.3
    LT3009-5

    Reference Designs (4)

    Product Recommendations

    LT3009 Companion Parts

    Recommended Related Parts

    Design Resources

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    LT3009 Material Declaration
    Quality And Reliability
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    Support & Discussions

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    LT3009 Ask your question »
    LT3009 Contact ADI Technical Support » LT3009 Ask your question »

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