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Evaluation Kit for the MAX686

Product Details

Key Features

Simplified Block Diagram

Technical Docs

Data Sheet Evaluation Kit for the MAX686 Feb 01, 1998

Support & Training

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Key Features

  • Output Voltage:
    • +18V Typical Positive Output (or +12.6V to +24V adjustable with up/down)
    • -17V Typical Negative Output (or -22.7V to -11.4V adjustable with up/down)
  • Battery Input Voltage:
    • +0.8V to +18V (Positive Output)
    • +0.8V to +12V (Negative Output)
  • +2.7V to +5.5V VIN Supply Range
  • Up to 20mA Output Current
  • 6-Bit DAC-Controlled Output Voltage
  • Internal 0.5A, 28V N-Channel Switch
  • 1.3µA IC Shutdown Current
  • Up to 300kHz Switching Frequency
  • Surface-Mount Components
  • Fully Assembled and Tested

Applications/Uses

  • Notebook Computers
  • Palmtop Computers
  • PDAs and Other Handheld Devices
  • Portable Data-Collection Terminals
  • Positive or Negative LCD Bias
  • Varactor Tuning Diode Bias

Description

The MAX686 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains two separate switching-regulator circuits. The first circuit converts a +0.8V to +18V battery voltage to a +18V LCD bias voltage for currents up to 20mA. The second circuit converts a +0.8V to +12V battery voltage to a-17V voltage for currents up to 20mA.

The MAX686 requires a +2.7V to +5.5V supply at VIN, but the inductor can be powered from as low as +0.8V. The device features an internal N-channel MOSFET switch, programmable current limit, and internal 6-bit DAC for digital adjustment of the output voltage. The MAX686 EV kit provides low quiescent current and high efficiency for maximum battery life. Operation up to 300kHz allows the use of a tiny surface-mount inductor.

Simplified Block Diagram

Technical Docs

Data Sheet Evaluation Kit for the MAX686 Feb 01, 1998

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.