MAX633

PRODUCTION

CMOS Fixed/Adjustable Output Step-Up Switching Regulators

Integrated Catch Diode Reduces Component Count

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Fixed +SV, +12V, +15V Output Voltages
  • Adjustable Output with 2 Resistors
  • 80% Typ Efficiency
  • Only 2 External Components
  • Charge Pump for Negative Output
  • 135µA Typ Operating Current

The MAX631, MAX632, and MAX633 are +5V, + 12V, and +15V fixed output, step-up DC-DC converters for use in low-power, high-efficiency switching regulator applica­ tions. The only external components required are an output filter capacitor and a low-cost inductor. Included on-chip are low battery detection circuitry and a charge pump output for generating a negative voltage in dual­ supply applications.

Though most simply used as fixed output regulators, the Ordering Information MAX631/632/633 can also be set for other output volt­ ages by adding an external voltage divider.

Maxim manufactures a broad line of step-up, step-down, and inverting DC-DC converters, with features such as logic-level shutdown, adjustable oscillator frequency, and external MOSFET drive.

APPLICATIONS

  • Minimum Component, High-Efficiency
  • DC-DC Converters
  • Portable Instruments
  • Rechargeable and Primary Battery Power Conversion
  • Uninterruptable On-Board Power Supplies
  • Card Level Multiple Power Conversion

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    MAX633
    CMOS Fixed/Adjustable Output Step-Up Switching Regulators
    max631 typical application circuit MAX631, MAX632, MAX633: Pin Configuration
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    Documentation

    Data Sheet 2

    Reliability Data 1

    Technical Articles 1

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