Evaluation Kit for the MAX1575

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The MAX1575 evaluation kit (EV kit) is a fully assem-bled and tested circuit for evaluating the MAX1575 white LED 1x/1.5x charge pump. The MAX1575 drives 4 white LEDs in a main display group and 2 white LEDs in a sub-group. These 6 surface-mount white LEDs are included on the EV kit. In addition to the LED driver cir-cuit, the EV kit includes two pulse-generator circuits on the left side of the PC board that are used for testing the single-wire serial pulse-dimming feature of the MAX1575.

Key Features

  • Powers 4 Main and 2 Sub-Display LEDs
  • Average 85% Efficiency (PLED / PBATT) over Li+ Battery Discharge
  • 1.5% LED Current Matching
  • Adaptive 1x/1.5x Mode Switchover
  • Low Input Ripple and EMI
  • Individual 5% to 100% Brightness Single-Wire Serial Pulse Dimming
  • 2.7V to 5.5V Supply Voltage Range
  • Thin QFN 4mm x 4mm IC Package
  • Fully Assembled and Tested
  • Applications/Uses

    • Cell Phones with Main and Sub-Displays
    • PDAs/Smartphones with Up to Six White LEDs
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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