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MAX866, MAX867
3.3V/5V or Adjustable Output, Single-Cell DC-DC Converters

We Recommend Improved Performance Device, MAX1678, for New Designs


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Description
FULL DATA SHEET (PDF, 152kB)
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The MAX866 and MAX867 are ultra-small, high-efficiency, CMOS, step-up, DC-DC switching regulators for 1-cell battery-powered systems. The MAX866 accepts a positive input voltage between 0.8V and VOUT and converts it to a higher, pin-selectable output voltage of 3.3V or 5V. The MAX867 adjustable version accepts 0.8V to 6.0V input voltages and generates a higher adjustable output voltage in the 2.7V to 6.0V range. Typical efficiencies are greater than 80%. Typical no-load supply current is 100µA (1µA in shutdown).

The MAX866/MAX867 combine ultra-low quiescent supply current and high efficiency to give maximum battery life. Its high switching frequency permits the use of small, low-cost inductors and capacitors. Additionally, internal peak-current limiting protects the IC.

Key Features   Applications/Uses
  • 0.8V to 6.0V Input Supply Voltage
  • 0.9V Guaranteed Start-Up Supply Voltage
  • > 80% Efficiency Over Wide Load Range
  • 100µA No-Load Battery Current (VOUT = 3.3V)
  • 1µA Shutdown Mode
  • Up to 250kHz Switching Frequency
  • ±1.5% Reference Tolerance
  • Low-Battery Detector (LBI/LBO)
  • Available in Ultra-Small 8-Pin µMAX® Package (1.11mm high)
  • Circuit Fits in 0.2in²

 
  • 1-Cell Battery-Operated Equipment
  • Backup Supplies
  • Detectors
  • Pagers
  • Remote Controls

    Diagram
    MAX866, MAX867: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-0374; Rev 1; 1996-05-01
    This page last modified: 2007-07-17


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