Linear LED Drivers | CAT4008

LED Driver, 8-Channel, Constant Current

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The CAT4008 is an 8 channel constant current driver for LED billboard and other general display applications. LED channel currents are programmed together via an external RSET resistor. Low output voltage operation on the LED channels as low as 0.4 V (for 2 to 100 mA LED current) allows for more power efficient designs.

A high-speed 4-wire serial interface of up to 25 MHz clock frequency controls each individual channel using a shift register and latch configuration. A serial output data pin (SOUT) allows multiple devices to be cascaded and programmed via one serial interface. The device also includes a blanking control pin (BLANK) that can be used to disable all channels independently of the interface.

Thermal shutdown protection is incorporated in the device to disable the LED outputs if the die temperature exceeds a set limit.

  • Billboard Display
  • Marquee Display
  • Instrument Display
  • General Purpose Display

  • 8 Constant current-sink channels
  • Serial interface up to 25 MHz clock frequency
  • 3 V to 5.5 V logic supply
  • LED current range from 2 mA to 100 mA
  • LED current set by external RSET resistor
  • 300 mV LED dropout at 30 mA
  • Thermal shutdown protection

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Product services, tools and other useful resources related to CAT4008

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VI Max (V)

IO Max (mA)

LEDs in Series, Max #

LEDs in Parallel, Max #

Reference Price

CAT4008V-T1

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Obsolete

CAD Model

Pb

A

H

P

SOIC-16W

751BH

1

260

REEL

1000

N

5.5

800

8

8

Price N/A

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CAT4008W-T2

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Obsolete

CAD Model

Pb

A

H

P

SOIC-16

751BG

1

260

REEL

2000

N

5.5

800

8

8

Price N/A

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CAT4008Y-T2

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CAD Model

Pb

A

H

P

TSSOP-16

948AN

3

260

REEL

2000

N

5.5

800

8

8

Price N/A

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可靠性数据

Die Related Summary Data

Device: CAT4008Y-T2

Equivalent to wafer fab process: CMOS SUB

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

CMOS SUB

2

920154574

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Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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