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Overview

Features and Benefits

  • Supports Up to 5 LEDs for Strobe/Flash
  • Four Operational Modes
    • Strobe: Up to 300mA (Preset to 100mA)
    • Precharge: With POK Indicator
    • Movie: Up to 100mA (Preset to 20mA)
    • Shutdown: 0.01µA (typ) Quiescent Current
  • Input Current Limiting
    • 1A (MAX1583X)
    • 500mA (MAX1583Y)
    • 250mA (MAX1583Z)
  • 24V Output Overvoltage Protection
  • 80% Efficient (PLED/PIN) Movie Mode
  • Thermal-Shutdown Protection
  • 10-Lead 3mm x 3mm TDFN Package
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Details

The MAX1583 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board for evaluating the MAX1583 white LED flash boost converter. The EV kit accepts a 2.6V to 5.5V input voltage and drives up to five series white LEDs with a constant current to provide camera flash/strobe in cell phones, PDAs, DSCs, and other hand-held devices. The device's switching frequency is 1MHz, allowing tiny external components. Two logic inputs control four modes of operation: shutdown mode (0.5µA max), movie mode for high-efficiency continuous lighting (programmable up to 100mA), precharge mode for charging a reservoir capacitor to 24V while the LEDs are off (POK output indicates a full reservoir capacitor), and strobe mode for firing the flash during an exposure with a regulated current programmable up to 300mA (100mA with installed components). A pushbutton pulse generator is installed to simulate a 30ms flash pulse.

The EV kit comes with the MAX1583X (1A current limit) installed, but the entire MAX1583 family can be evaluated with minor component changes.

Applications

  • Camera Flashes/Strobes
  • Cell Phones/Smartphones
  • PDAs and Digital Still Cameras

Applicable Parts

Documentation & Resources

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