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CAT4139 Datasheet 22v High Current Boost White Led Driver

Manufacturer: onsemi

Overview: CAT4139 22 V High Current Boost White LED Driver.

General Description

The CAT4139 is a DC/DC step−up converter that delivers an accurate constant current ideal for driving LEDs.

Operation at a fixed switching frequency of 1 MHz allows the device to be used with small value external ceramic capacitors and inductor.

LEDs connected in series are driven with a regulated current set by the external resistor R1.

Key Features

  • Switch Current Limit 750 mA.
  • Drives LED Strings up to 22 V.
  • Up to 87% Efficiency.
  • Low Quiescent Ground Current 0.6 mA.
  • 1 MHz Fixed Frequency Low Noise Operation.
  • Soft Start “In.
  • rush” Current Limiting.
  • Shutdown Current Less than 1 mA.
  • Open LED Overvoltage Protection.
  • Automatic Shutdown at 1.9 V (UVLO).
  • Thermal Overload Protection.
  • TSOT.
  • 23 5.
  • Lead (1 mm Max Height).
  • These Devices are Pb.
  • Free, Halogen Free/B.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Catalyst Semiconductor Logo CAT4139 22V High Current Boost White LED Driver Catalyst Semiconductor

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CAT4139 Distributor