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AP5724 - WHITE LED STEP-UP CONVERTER

General Description

The AP5724 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current.

LEDs in series from a Li-Ion cell.

Key Features

  • (Top View).
  • High Efficiency: 84% Typical SW 1 6 GND.
  • Fast 1.2MHz Switching Frequency.
  • Current Limit and UVLO Protections VIN 2 5 FB.
  • Internal Thermal Shutdown.
  • Internal Over Voltage Protection.
  • Integrated Soft-Start Function OVP 3 4 EN U-DFN2020-6.
  • SOT26, TSOT26 and U-DFN2020-6: Available in “Green” Molding Compound (No Br, Sb).
  • Lead-Free Finish; RoHS Compliant (Notes 1 & 2) .

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Pb AP5724 WHITE LED STEP-UP CONVERTER Description Pin Assignments The AP5724 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive 2 ~ 6 (Top View) LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and SW 1 6 VIN eliminates the need for ballast resistors. For driving higher number of LEDs, AP5724 also supports a single feedback of parallel connected GND 2 5 OVP multiple strings of equal number of LEDs. The AP5724 switches at 1.2MHz that allows the use of tiny external FB 3 74 EN components. A low 0.