3A, 25V, 1.1MHz Step-Up Converter

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Product Description

The MP1517 is a 3A, fixed frequency step-up converter ideal for medium-to-high current step­up, 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.

Product Features

  • 4A Peak Current Limit
  • Low 700mV Feedback Threshold
  • Internal 150mΩ Power Switch
  • Input Range of 2.6V to 25V
  • Up to 95% Efficiency
  • Zero Current Shutdown Mode
  • Under Voltage Lockout Protection
  • Open Load Protection
  • Soft-Start Operation
  • Thermal Shutdown
  • Tiny 4x4mm 16-Pin QFN Package


  • Vout (min) (V)3.3
  • Vin (min) (V)2.6
  • Vin (max) (V)25
  • Isw Limit (typ) (A)4
  • Iq (typ) (mA)0.9
  • Regulated Outputs1
  • Vout (max) (V)25
  • Vfb (V)0.7
  • GradeCatalog
  • PackageQFN-16 (4x4)
  • Special FeaturesEnable, Thermal Shutdown
  • SSExternal
  • Down ModeNo
  • PGNo
  • Input/Output DisconnectNo
  • Enable All Buying Option LinkNo
  • Disable Add To Cart ButtonNo
  • Enable Evaluation Kit ButtonNo
  • Disable In Stock BlockNo

Reference Materials