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CAT4240 Datasheet 6 Watt Boost LED Driver

Manufacturer: onsemi

General Description

The CAT4240 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.

Overview

CAT4240 6 Watt Boost LED Driver.

Key Features

  • Switch Current Limit 750 mA.
  • Drives High Voltage LED Strings (38 V).
  • Up to 94% 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.
  • Thin SOT23 5.
  • lead (1 mm Max Height).