EV0043

Active
3A, 25V, 1.1MHz, Step-Up Converter for WLED Applications
  • 数量 价格
  • 1
    US$ 25.00 /unit
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Product Description

The EV1517 is the evaluation board used to demonstrate the white LED driver capabilities of the MP1517. The low 0.7V feedback voltage offers higher efficiency in white LED driver applications including cell phone camera flash. Soft-start, cycle-by-cycle current limiting and input under voltage lockout prevent overstressing or damage to sensitive external circuitry at startup and output short-circuit conditions. Current-mode regulation and external compensation components allow the MP1517 control loop to be optimized over a wide variety of input voltages, output voltages and load current conditions.

Product Features

  • 4A Peak Current Limit
  • Low 700mV Feedback Threshold
  • Internal 150m? Power Switch
  • Input Range of 2.6V to 25V
  • 95% Efficiency
  • Zero Current Shutdown Mode
  • Under Voltage Lockout Protection
  • Open Load Protection
  • Soft-Start Operation
  • Thermal Shutdown
  • Tiny QFN16 (4mm x 4mm) Package

Parametrics

  • IC Supported 1MP1517

Monolithic IC

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IC Details

The MP1517 is a 3A, fixed frequency step-up converter ideal for medium-to-high current step?p, flyback and SEPIC applications. The high 1.1MHz switching frequency allows for smaller external components producing a compact solution for size constrained cameras, PDAs and cell phones. The low 0.7V feedback voltage offers higher efficiency in white LED driver applications including cell phone camera flash. The MP1517 regulates the output voltage up to 25V with efficiencies as high as 95%. Soft-start, cycle-by-cycle current limiting, and input under voltage lockout prevent overstressing or damage to sensitive external circuitry at startup and output short-circuit conditions. Current-mode regulation and external compensation components allow the MP1517 control loop to be optimized over a wide variety of input voltage, output voltage, and load current conditions. The MP1517 is available in the thermally enhanced QFN16 (4mm x 4mm) package.