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Linear LED Drivers | CAT4004A

LED Driver, 4-Channel, with 32 Dimming Levels and Reset

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Overview

The CAT4004A provides four matched low dropout current sources to drive LEDs. The CAT400XA uses an external resistor RSET to set the current in the LED channels. Each LED channel includes an individual control loop allowing the device to handle a wide range of LED forward voltages while still maintaining tight current matching.

The EN/DIM logic inputs supports device enable and a digital dimming interface for setting the LED channel current with 32 linear dimming levels.

LEDs can be powered directly from a Lithium-ion battery due to the low dropout (50 mV at 20 mA) current sinks. The device is available in the tiny 8-pad UDFN 2 mm x 2 mm package with a max height of 0.55 mm.

  • LCD Display Backlight
  • Digital Still Cameras
  • Cellular Phones
  • Handheld Devices
  • 2 and 4 LED Current Sinks with Tight Matching
  • 32 Dimming Levels
  • Low Dropout Driver 50 mV at 20 mA
  • No Switching Noise
  • Shutdown Current less than 1 µA
  • LED Current set by External Resistor
  • Dimming via 1-wire EZDim Interface
  • Thermal Shutdown Protection
  • These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant

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CAT4004AHU2-GT3

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CAD Model

Pb

A

H

P

UDFN-8

517AW

1

260

REEL

3000

Y

5.5

40

1

4

$0.4905

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