• Part: AP1521
  • Manufacturer: Anachip
  • Size: 197.37 KB
Download AP1521 Datasheet PDF
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AP1521 Key Features

  • Inherently Matched LED Current
  • Drives Up to Four LEDs from a 3.2V Supply
  • Drives Up to Six LEDs from a 5V Supply
  • High Efficiency: 84% Typical
  • Fast 1MHz Switching Frequency
  • 36V Rugged Bipolar Switch
  • Low Profile SOT23-5 Pb-Free Packaging

Related Anachip Datasheets

Part Number Description
AP1522 Step-Up DC/DC Converter
AP1501 3A PWM Buck DC/DC Converter
AP1501A 5A PWM Buck DC/DC Converter
AP1503 2.5A PWM Buck DC/DC Converter
AP1506 150KHz/ 3A PWM Buck DC/DC Converter

AP1521 Description

The AP1521 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive two, three or four LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminates the need for ballast resistors.