CAT4109: LED Driver, RGB, 3-Channel

The CAT4109 is a 3-channel constant-current LED driver, requiring no inductor. LED channel currents up to 175 mA are programmed independently via separate external resistors. Low output voltage operation of 0.4 V at 175 mA allows for more power efficient designs across wider supply voltage range. The three LED pins are compatible with high voltage up to 25 V supporting applications with long strings of LEDs. Three independent control inputs PWM1, PWM2, PWM3, control respectivelly LED1, LED2, LED3 channels. The device also includes an output enable (OE) control pin to disable all three channels independently of the PWMx input states. Thermal shutdown protection is incorporated in the device to disable the LED outputs whenever the die temperature exceeds 150°C.

Features
  • 3 independent current sinks up to 175 mA rated 25 V
  • LED current set by external low power control resistors
  • Individual PWM control per channel
  • Low dropout current source (0.4 V at 175 mA)
  • Output Enable input for dimming
  • 'Zero' current shutdown mode
  • 3 V to 5.5 V logic supply
  • Thermal shutdown protection
Applications
  • LCD Backlighting
End Products
  • Architectural Lighting
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
LED Driver, RGB, 3-ChannelCAT4109/D (181kB)6Feb, 2016
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC-16, 150 mils751BG (56.2kB)revo
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT4109V-GT2ActivePb-free Halide freeSOIC-16751BG1Tape and Reel3000$0.8666
CAV4109V-GT2ActiveAEC Qualified PPAP Capable Pb-free Halide freeSOIC-16751BG3Tape and Reel3000$0.4933
Specifications
ProductVI Max (V)IO Max (mA)LEDs in Series, Max #LEDs in Parallel, Max #
CAT4109V-GT22552573
CAV4109V-GT2255253
LED Driver, RGB, 3-Channel (181kB) CAT4109
SOIC-16, 150 mils CAT9554
CAT4109