CAT4008Y-T2 Datasheet
8-Channel Constant Current LED Driver
Download: CAT4008Y-T2 Datasheet 
CAT4008Y-T2
8-Channel Constant Current LED Driver
CAT4008
FEATURES
-8 Constant Current-sink Channels -serial Interface Up To 25mhz Clock Frequency -3v To 5.5v Logic
Supply -led Current Range From 2ma To 100ma -led Current Set By External Rset Resistor -300mv Led
Dropout At 30ma -thermal Shutdown Protection -available In Rohs-compliant 16-lead Soic (150
and 300mil wide), and TSSOP packages
Applications
-Billboard Display -Marquee Display -Instrument Display -General Purpose Display
For Ordering Information details, see page 13.
Description
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 0.4v (for 2 To 100ma Led Current) Allows For More
power efficient designs.
A High-speed 4-wire Serial Interface Of Up To 25mhz 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.
The Device Is Available In The 16-lead Soic (narrow And Wide), And Tssop Packages.
TYPICAL
Application CIRCUIT
3V to 5.5V
1 F VDD LED1 LED2
CONTROLLER
BLANK LATCH SIN CLK
CAT4008
SOUT RSET
to next device
Catalyst Semiconductor
Characteristics subject to change without notice
Doc. No. MD-5034 Rev. A
CAT4008
ORDERING INFORMATION
Part Number CAT4008W-T2 CAT4008V-T1 CAT4008Y-T2
CAT4008Y-T2 Datasheet
LED Driver, 8 Chan, 4-wire I/F
Download: CAT4008Y-T2 Datasheet
CAT4008Y-T2
LED Driver, 8 Chan, 4-wire I/F
CAT4008
8-Channel Constant Current LED Driver
FEATURES
-8 Constant Current-sink Channels -serial Interface Up To 25mhz Clock Frequency -3v To 5.5v Logic
Supply -led Current Range From 2ma To 100ma -led Current Set By External Rset Resistor -300mv Led
Dropout At 30ma -thermal Shutdown Protection -available In Rohs-compliant 16-lead Soic (150
and 300mil wide), and TSSOP packages
Applications
-Billboard Display -Marquee Display -Instrument Display -General Purpose Display
For Ordering Information details, see page 13.
Description
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 0.4v (for 2 To 100ma Led Current) Allows For More
power efficient designs.
A High-speed 4-wire Serial Interface Of Up To 25mhz 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.
The Device Is Available In The 16-lead Soic (narrow And Wide), And Tssop Packages.
TYPICAL
Application CIRCUIT
VDD LED1 LED2
CONTROLLER
BLANK LATCH SIN CLK
CAT4008
SOUT RSET
to next device
2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
Doc. No. MD-5034 Rev. C
CAT4008
ORDERING INFORMATION
Part Number CAT4008W-T2 CAT4008V-T1 CAT4008Y-T2 CAT4008Y-GT2
CAT4008Y-T2 Datasheet
CAT4008 - IC LED DISPLAY DRIVER, PDSO16, 4.40 MM, HALOGEN FREE AND ROHS COMPLIANT,
Download: CAT4008Y-T2 Datasheet
CAT4008Y-T2
CAT4008 - IC LED DISPLAY DRIVER, PDSO16, 4.40 MM, HALOGEN FREE AND ROHS COMPLIANT,
CAT4008
8-Channel Constant Current LED Driver
Description
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.
The Device Is Available In The 16 Lead Soic (narrow And Wide), And Tssop Packages.
FEATURES
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
Available in 16 lead SOIC (150 and 300 mil wide), and TSSOP
Packages
These Devices are Pb Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
Billboard Display
Marquee Display
Instrument Display
General Purpose Display
1 SOIC 16 W SUFFIX CASE 751BG
1 SOIC 16 V SUFFIX CASE 751BH
TSSOP 16 Y SUFFIX CASE 948AN
PIN CONNECTIONS
16 Lead SOIC (W, V), TSSOP (Y) (Top View)
ORDERING INFORMATION
See Detailed Ordering And Shipping Information In The Package Dimensions Section On Page 13 Of This
data sheet.
MARKING DIAGRAMS