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  6. LTC3528

Data Sheet
JP
User Guides
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Overview

Features and Benefits

  • Delivers 3.3V at 200mA from a Single Alkaline/NiMH Cell or 3.3V at 400mA from Two Cells
  • VIN Start-Up Voltage: 700mV
  • 1.6V to 5.25V VOUT Range
  • Up to 94% Efficiency
  • Output Disconnect
  • 1MHz Fixed Frequency Operation
  • VIN > VOUT Operation
  • Integrated Soft-Start
  • Current Mode Control with Internal Compensation
  • Burst Mode® Operation with 12µA Quiescent Current (LTC3528)
  • Low Noise PWM Operation (LTC3528B)
  • Internal Synchronous Rectier
  • Logic Controlled Shutdown: <1µA
  • Anti-Ringing Control
  • Low Prole (3mm x 2mm x 0.75mm) DFN Package

Product Details

The LTC3528/LTC3528B are synchronous, fixed frequency step-up DC/DC converters with output disconnect. High efficiency synchronous rectification, in addition to a 700mV start-up voltage and operation down to 500mV once started, provides longer run-time for single or multiple cell battery-powered products.

A switching frequency of 1MHz minimizes solution foot- print by allowing the use of tiny, low prole inductors and ceramic capacitors. The current mode PWM is internally compensated, simplifying the design process. The LTC3528 enters Burst Mode operation at light loads, while the LTC3528B features continuous switching at light loads. Anti-ringing circuitry reduces EMI by damping the inductor in discontinuous mode. Additional features include a low shutdown current, open-drain power good output, short- circuit protection and thermal overload protection.

The LTC3528/LTC3528B are offered in an 8-lead 3mm x 2mm x 0.75mm DFN package.


   Frequency Burst Mode
LTC3528 1MHz Yes
LTC3528B 1MHz No
LTC3528-2 2MHz Yes
LTC3528B-2 2MHz No

Applications

  • Medical Instruments
  • Flash-Based MP3 Players
  • Noise Canceling Headphones
  • Wireless Mice
  • Bluetooth Headsets

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Product Lifecycle icon-recommended Recommended for New Designs

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 (4)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Press Releases (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:

    LTC3528
    LTC3528-2
    LTC3528B
    LTC3528B-2

    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
    LTC3528BEDDB#TRMPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 2mm w/ EP)
    LTC3528BEDDB#TRPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 2mm w/ EP)
    LTC3528EDDB#TRMPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 2mm w/ EP)
    LTC3528EDDB#TRPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 2mm w/ EP)
    Wafer Fabrication Data R457 Reliability Data

    Support & Discussions

    LTC3528 Discussions

    RE: ADP6107 Vin >Vout behavior
    All LTC3528 Discussions
    LTC3528 Contact ADI Technical Support »
    LTC3528 Ask your question »
    LTC3528 Contact ADI Technical Support » LTC3528 Ask your question »

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    Evaluation Boards

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    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.

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