1. Products
  2. Power Management
  3. Inductorless (Charge Pump) DC/DC Converters
  4. Regulated Inverting Charge Pumps
  5. LTC1983

Data Sheet
PDF
User Guide
1 View All

Overview

Features and Benefits

  • Fixed Output Voltages: –3V, –5V or Low Noise VIN to –VIN Inverted Output
  • ±4% Output Voltage Accuracy
  • Low Quiescent Current: 25µA
  • 100mA Output Current Capability
  • 2.3V to 5.5V Operating Voltage Range
  • Internal 900kHz Oscillator
  • "Zero Current" Shutdown
  • Short-Circuit and Over-Temperature Protected
  • Low Profile (1mm) ThinSOT™ Package

Product Details

The LTC1983-3 and LTC1983-5 are inverting charge pump DC/DC converters that produce negative regulated outputs. The parts require only three tiny external capacitors and can provide up to 100mA of output current. The devices can operate in open loop mode (creating a –VIN supply) or regulated output mode depending on the input supply voltage and the output current.

The LTC1983-3/LTC1983-5 have many useful features for portable applications including very low quiescent current (25µA typical) and a zero current shutdown mode programmed through the SHDN pin.

The LTC1983-3/LTC1983-5 are over-temperature and short-circuit protected. The parts are available in a 6-pin low profile (1mm) ThinSOT package.

Applications

  • –3V Generation in Single-Supply Systems
  • Portable Equipment
  • LCD Bias Supplies
  • GaAs FET Bias Supplies

Product Categories

Markets and Technologies

Comparable Parts Click to see all in Parametric Search

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.

Evaluation Kits (1)

Documentation & Resources

  • View All (5)
  • Data Sheet (1)
  • Reliability Data (1)
  • User Guide (1)
  • Technical Article (2)
    • 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

    LTC1983 Demo Circuit - Combined Regulated Inverter & Unregulated Doubler (3-5.5V to -3V @ 100mA & Doubler)

    Models for the following parts are available in LTspice:

    LTC1983-3
    LTC1983-5

    Reference Designs (1)

    Product Recommendations

    LTC1983 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
    LTC1983ES6-3#TRMPBF Material Declaration Reliability Data 6-Lead TSOT-23
    LTC1983ES6-3#TRPBF Material Declaration Reliability Data 6-Lead TSOT-23
    LTC1983ES6-5#TRMPBF Material Declaration Reliability Data 6-Lead TSOT-23
    LTC1983ES6-5#TRPBF Material Declaration Reliability Data 6-Lead TSOT-23
    Wafer Fabrication Data R402 Reliability Data

    Support & Discussions

    LTC1983 Discussions

    RE: Reliability Information Regarding Parts
    RE: ADV3220 Supply
    All LTC1983 Discussions
    LTC1983 Contact ADI Technical Support »
    LTC1983 Ask your question »
    LTC1983 Contact ADI Technical Support » LTC1983 Ask your question »

    Sample & Buy


    Ordering FAQs


    See our Ordering FAQs for answers to questions about online orders, payment options and more.

     

    Buy Now Pricing


    (**) Displayed Buy Now Price and Price Range is based on small quantity orders.

     

    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.

     

    Sampling


    A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


    Price Table Help

     

    Evaluation Boards

    Pricing displayed is based on 1-piece.

    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

    •