Data Sheet Rev. 0
JP 1 View All

Overview

Features and Benefits

  • Charges 35µF to 300V
  • EV Kit Includes Xenon Flash Tube, IGBT, and Trigger Transformer
  • Voltage-Monitor Output
  • No Inrush Current
  • Short-Circuit Protection
  • Programmable Input Current Limit Up to 2A
  • Programmable Input Voltage-Overload Protection
  • Robust Architecture Allows Use of Low-Cost Transformers
  • High Accuracy Not Dependent on Transformer Turns Ratio
  • Automatic Refresh Mode Draws Minimal Quiescent Current
  • Charge-Done Indicator
  • Fully Assembled and Tested

Product Details

The MAX8685A evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) for evaluating the MAX8685A xenon flash charger. The MAX8685A EV kit operates from a 2.5V to 5.5V supply and charges a 35µF capacitor to 300V. Battery voltages as a low as 1.5V can be used to supply the inductor primary current. The MAX8685A features an undervoltage input monitor (UVI). UVI monitors the battery voltage and suspends switching if the input voltage drops below a programmed threshold. The MAX8685A also features a voltage-monitor output that provides a scaled replica of the output voltage. The current limit on the MAX8685A EV kit is set to 2A (2.6A for the MAX8685F), and is easily adjusted by adding a resistor. An LED indicator on the EV kit lights up when the initial charging cycle is complete.

Applications

  • Cell-Phone Cameras
  • Digital Cameras
  • Film Cameras
  • Personal Media Players

Applicable Parts

Documentation & Resources

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