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  5. LT3436

Data Sheet
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Overview

Features and Benefits

  • Constant 800kHz Switching Frequency
  • Wide Operating Voltage Range: 3V to 25V
  • High Efficiency 0.1Ω/3A Switch
  • 1.2V Feedback Reference Voltage
  • ±2% Overall Output Voltage Tolerance
  • Uses Low Profile Surface Mount External Components
  • Low Shutdown Current: 11µA
  • Synchronizable from 1MHz to 1.4MHz
  • Current-Mode Control
  • Constant Maximum Switch Current Rating at All Duty Cycles*
  • Available in a Small Thermally Enhanced TSSOP-16 Package

Product Details

The LT3436 is an 800kHz monolithic boost switching regulator. A high efficiency 3A, 0.1Ω switch is included on the die together with all the control circuitry required to complete a high frequency, current-mode switching regulator. Current-mode control provides fast transient response and excellent loop stability.

New design techniques achieve high efficiency at high switching frequencies over a wide operating range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li- Ion batteries. An operating supply current of 1mA maintains high efficiency, especially at lower output currents. Shutdown reduces quiescent current to 11µA. Maximum switch current remains constant at all duty cycles. Synchronization capability allows an external logic level signal to increase the internal oscillator from 1MHz to 1.4MHz.

Full cycle-by-cycle switch current limit protection and thermal shutdown are provided. High frequency operation allows the reduction of input and output filtering components and permits the use of tiny chip inductors. The LT3436 is available in an exposed pad, 16-pin TSSOP package.

*Patent numbers 6,535,042; 6,611,131; 6,498,466

Applications

  • DSL Modems
  • Portable Computers
  • Battery-Powered Systems
  • Distributed Power

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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

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  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Application Notes (1)
  • Technical Articles (2)
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    Tools & Simulations

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    Product Recommendations

    LT3436 Companion Parts

    Recommended Suggested Oscillator

    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
    LT3436EFE#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    LT3436EFE#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
    Wafer Fabrication Data R388 Reliability Data

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    • LT3436EFE#PBF Production
    • LT3436EFE#TRPBF Production

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