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CAT4109, CAV4109
3-Channel Constant-Current
RGB LED Driver with
Individual PWM Dimming
Description
The CAT4109/CAV4109 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.
http://onsemi.com
SOIC ? 16
V SUFFIX
CASE 751BG
Three independent control inputs PWM1, PWM2, PWM3, control
respectively 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.
The device is available in a 16 ? lead SOIC package.
PIN CONNECTIONS
1
PGND
GND
PWM3
PWM2
VDD
OE
NC
NC
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
? 16 ? lead SOIC Package
? CAV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC ? Q100
PWM1 NC
RSET3 LED1
RSET2 LED2
RSET1 LED3
(Top View)
MARKING DIAGRAM
L3A
CAT4109VB
YMXXXX
?
Qualified and PPAP Capable
These Devices are Pb ? Free, Halogen Free/BFR Free and are RoHS
Compliant
L = Assembly Location
3 = PB Free
A = Product Revision (Fixed as “A”)
Application
? Multi ? color LED, Architectural Lighting
? LED Signs and Displays
? LCD Backlight
CAT4109V = Device Code
B = Leave Blank
Y = Production Year (Last Digit)
M = Production Month (1 ? 9, O, N, D)
XXXX = Last Four Digits of Assembly Lot Number
ORDERING INFORMATION
Device
CAT4109V ? GT2
(Note 1)
CAV4109V ? GT2
(Note 1)
Package
SOIC ? 16
(Pb ? Free)
SOIC ? 16
(Pb ? Free)
Shipping
2,000/
Tape & Reel
2,000/
Tape & Reel
1. Lead Finish Pb Free
? Semiconductor Components Industries, LLC, 2013
December, 2013 ? Rev. 4
1
Publication Order Number:
CAT4109/D
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