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  3. Inductorless (Charge Pump) DC/DC Converters
  4. Regulated Inverting Charge Pumps
  5. LTC3265

Data Sheet
JP
User Guides
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Overview

Features and Benefits

  • Boost Charge Pump Generates 2 • VIN_P (VIN_P Range: 4.5V to 16V)
  • Inverting Charge Pump Generates –VIN_N (VIN_N Range: 4.5V to 32V)
  • Low Noise Positive LDO Post Regulator Up to 50mA
  • Low Noise Negative LDO Post Regulator Up to 50mA
  • 135μA Quiescent Current in Burst Mode® Operation with Both LDO Regulators On
  • 50kHz to 500kHz Programmable Oscillator Frequency
  • Stable with Ceramic Capacitors
  • Short-Circuit/Thermal Protection
  • Low Profile 3mm × 5mm 18-Lead DFN and Thermally Enhanced 20-Lead TSSOP Packages

Product Details

The LTC3265 is a low noise dual polarity output power supply including a boost charge pump, an inverting charge pump and two low noise positive and negative LDO post regulators. The boost charge pump powers the positive LDO post regulator while the inverting charge pump powers the negative LDO regulator. Each LDO can provide up to 50mA of output current. The LDO output voltages can be adjusted using external resistor dividers.

The charge pumps employ low quiescent current Burst Mode operation or low noise constant frequency mode. During Burst Mode operation, the boost charge pump regulates its output (VOUT +) to 0.94 • 2 • VIN_P while the inverting charge pump regulates its output (VOUT –) to –0.94 • VIN_N. In Burst Mode operation the LTC3265 draws only 135μA of quiescent current with both LDOs on. In constant frequency mode, the boost and inverting charge pumps produce outputs equal to 2 • VIN_P and –VIN_N respectively and operate at a fixed 500kHz or to a programmed value between 50kHz to 500kHz using an external resistor. The LTC3265 is available in low profile 3mm × 5mm × 0.75mm 18-lead DFN and thermally enhanced 20-lead TSSOP packages.

Applications

  • Low Noise Bipolar/Inverting Supplies
  • Industrial/Instrumentation Low Noise Bias Generators

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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.

Evaluation Kits (2)

Documentation & Resources

  • View All (6)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Product Selector Card (1)
  • Press Releases (1)
  • Technical Articles (1)
    • Document Type

    Tools & Simulations

    LTspice

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    LTspice

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    LTC3265

    Product Recommendations

    LTC3265 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
    LTC3265EDHC#PBF Material Declaration Reliability Data 18-Lead DFN (5mm x 3mm w/ EP)
    LTC3265EDHC#TRPBF Material Declaration Reliability Data 18-Lead DFN (5mm x 3mm w/ EP)
    LTC3265EFE#PBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
    LTC3265EFE#TRPBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
    LTC3265HDHC#PBF Material Declaration Reliability Data 18-Lead DFN (5mm x 3mm w/ EP)
    LTC3265HDHC#TRPBF Material Declaration Reliability Data 18-Lead DFN (5mm x 3mm w/ EP)
    LTC3265HFE#PBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
    LTC3265HFE#TRPBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
    LTC3265IDHC#PBF Material Declaration Reliability Data 18-Lead DFN (5mm x 3mm w/ EP)
    LTC3265IDHC#TRPBF Material Declaration Reliability Data 18-Lead DFN (5mm x 3mm w/ EP)
    LTC3265IFE#PBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
    LTC3265IFE#TRPBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
    LTC3265MPDHC#PBF Material Declaration Reliability Data 18-Lead DFN (5mm x 3mm w/ EP)
    LTC3265MPDHC#TRPBF Material Declaration Reliability Data 18-Lead DFN (5mm x 3mm w/ EP)
    LTC3265MPFE#PBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
    LTC3265MPFE#TRPBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
    Wafer Fabrication Data R526 Reliability Data

    PCN-PDN Information

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    Select Model for PCN Information
    • LTC3265EFE#PBF Production
    • LTC3265EFE#TRPBF Production
    • LTC3265HFE#PBF Production
    • LTC3265HFE#TRPBF Production
    • LTC3265IFE#PBF Production
    • LTC3265IFE#TRPBF Production
    • LTC3265MPFE#PBF Production
    • LTC3265MPFE#TRPBF Production

    Support & Discussions

    LTC3265 Discussions

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