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  2. Power Management
  3. Inductorless (Charge Pump) DC/DC Converters
  4. Regulated Step-Up Charge Pumps
  5. LTC1502-3.3

Data Sheet
User Guides
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Overview

Features and Benefits

  • Input Voltage Range: 0.9V to 1.8V
  • 0.9V Guaranteed Start-Up Voltage
  • Regulated Output Voltage: 3.3V ±4%
  • Output Current: 10mA (VIN ≥ 1V)
  • No Inductors
  • Shutdown Disconnects Load from VIN
  • Low Operating Current: 40µA
  • Low Shutdown Current: 5µA
  • Short-Circuit and Overtemperature Protected
  • Application Circuit Fits in <0.125in2 PCB Area
  • Available in 8-Pin MSOP and SO Packages

Product Details

The LTC1502-3.3 is a quadrupler charge pump DC/DC converter that produces a regulated 3.3V output from a single alkaline cell input. It requires only five small external capacitors—no inductors are required. Low supply current (40µA typical, 5µA in shutdown) and minimal external components make the LTC1502-3.3 ideal for space and power conscious single-cell applications. The total printed circuit board area of the circuit shown below is less than 0.125in2.

Forcing the C1−/SHDN pin through an external resistive pull-down puts the part into shutdown mode. During shutdown, the internal oscillator is stopped and the load is disconnected from VIN. An internal pull-up current on the C1−/SHDN pin forces the part back into normal operation once the pull-down resistance is removed.

The LTC1502-3.3 is short-circuit protected and survives an indefinite VOUT short to ground. The LTC1502-3.3 is available in 8-pin MSOP and SO packages.

Applications

  • Pagers
  • Battery Backup Supplies
  • Portable Electronic Equipment
  • Handheld Medical Instruments
  • Glucose Meters

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Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
    • 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.

    LTspice

    Models for the following parts are available in LTspice:

    LTC1502-3.3

    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
    LTC1502CMS8-3.3#PBF Material Declaration Reliability Data 8-Lead MSOP
    LTC1502CMS8-3.3#TRPBF Material Declaration Reliability Data 8-Lead MSOP
    LTC1502CS8-3.3#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC1502CS8-3.3#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC1502IS8-3.3#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC1502IS8-3.3#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    Wafer Fabrication Data R402 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
    • LTC1502CMS8-3.3#PBF Production
    • LTC1502CMS8-3.3#TRPBF Production
    • LTC1502CS8-3.3#PBF Production
    • LTC1502CS8-3.3#TRPBF Production
    • LTC1502IS8-3.3#PBF Production
    • LTC1502IS8-3.3#TRPBF Production

    Support & Discussions

    LTC1502-3.3 Contact ADI Technical Support »
    LTC1502-3.3 Ask your question »
    LTC1502-3.3 Contact ADI Technical Support » LTC1502-3.3 Ask your question »

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