cat4008 Catalyst Semiconductor, cat4008 Datasheet
![no-image](/images/manufacturer_photos/0/1/126/catalyst_semiconductor_sml.jpg)
cat4008
Available stocks
Related parts for cat4008
cat4008 Summary of contents
Page 1
... SIN CLK GND © Catalyst Semiconductor, Inc. Characteristics subject to change without notice DESCRIPTION The CAT4008 channel constant current driver for LED billboard 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 ...
Page 2
... LED7 6 11 LED3 LED6 7 10 LED4 LED5 8 9 Notes: (1) Matte-Tin Plated Finish (RoHS-compliant). (2) Contact factory for package availability. Doc. No. MD-5034 Rev. A Quantity per Reel Package Marking 2000 CAT4008W 1000 CAT4008V 2000 CAT4008Y 2 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice ...
Page 3
... SET R = 3.08kΩ SET R = 769Ω SET V = 5V, outputs off LED GND -1mA 1mA OL BLANK high, outputs off 3 CAT4008 Units 6 V +0. 150 mA °C °C 300 °C Range Units °C Min Typ Max Units ...
Page 4
... LATCH to LED1 off/on LED(n) to LED(n+1) LED1 to LED8 BLANK to LED(n) off/on Pull-up resistor = 50Ω to 3.0V Pull-up resistor = 50Ω 15pF 15pF L CLK to SOUT 1µF VDD LED1 BLANK CAT4008 LATCH LED8 SIN CLK SOUT RSET GND RSET 4 (1) (2) (1) Min Typ Max Units ...
Page 5
... LATCH LATCH BLANK LED1 LED2 LED8 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 1/f clk cwl cwh lwh Figure 1. Serial Input Timing Diagram lst ls Figure 2. LED Output Timing Diagram 5 CAT4008 t lsu t bd Doc. No. MD-5034 Rev. A ...
Page 6
... CAT4008 TYPICAL PERFORMANCE CHARACTERISTICS V = 5.0V, LED current 30mA, all LEDs On LED Current vs. LED Pin Voltage 0.0 0.3 0.6 0.9 LED PIN [V] LED Current vs. VDD Pin Voltage 31.5 31.0 30.5 30.0 29.5 29.0 28.5 3.0 3.5 4.0 4.5 VDD [V] RSET Voltage vs. VDD Pin Voltage 1.30 1.25 1.20 1.15 1.10 3.0 3.5 4.0 4.5 VDD [V] Doc. No. MD-5034 Rev 25°C unless otherwise specified. ...
Page 7
... Characteristics subject to change without notice = 25°C unless otherwise specified. AMB LED Current vs. Temperature 31.5 31.0 30.5 30.0 29.5 29.0 28.5 100 150 Internal Pull-Up Current (BLANK pin CAT4008 - 100 150 TEMPERATURE [° BLANK VOLTAGE [V] BLANK Transient Response Doc. No. MD-5034 Rev ...
Page 8
... CAT4008 PIN DESCRIPTION Name Function GND Ground SIN Serial data input pin CLK Serial clock input pin LATCH Latch serial data to output registers LED1-LED8 LED channel cathode terminals BLANK Enable / disable all channels SOUT Serial data output pin. RSET LED current set pin ...
Page 9
... BLOCK DIAGRAM VDD VIN BLANK LATCH SIN CLK Figure 2. CAT4008 Functional Block Diagram BASIC OPERATION The CAT4008 uses 8 tightly matched current sinks to accurately regulate the LED current in each channel. The external resistor used to set the LED SET ≅ × LED current ...
Page 10
... CAT4008 PACKAGE OUTLINE DRAWINGS SOIC 16-Lead Narrow Body 150mils (W) PIN#1 IDENTIFICATION TOP VIEW SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions in millimeters. Angle in degrees. (2) Compiles with JEDEC MS-012 Doc. No. MD-5034 Rev. A ...
Page 11
... For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions in millimeters. Angle in degrees. (2) Compiles with JEDEC MS-013. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice (1)(2) SYMBOL θ A θ CAT4008 MIN NOM MAX 2.36 2.49 2.64 0.10 0.30 0.33 0.41 0.51 0.18 0.23 0.28 10.08 10.31 10.49 10.01 10.31 10.64 7.39 7.49 7.59 1.27 BSC 0.25 0.75 ...
Page 12
... CAT4008 (1)(2) TSSOP 16-Lead 4.4mm ( PIN#1 IDENTIFICATION TOP VIEW D SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions in millimeters. Angle in degrees. (2) Compiles with JEDEC MO-153. Doc. No. MD-5034 Rev. A SYMBOL MIN A A1 0.05 A2 0.85 b 0.19 c ...
Page 13
... All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is Matte-Tin. (3) The device used in the above example is a CAT4008W–T2 (SOIC 16-Lead 150 mils, Matte-Tin, Tape & Reel 2000). (4) Contact factory for package availability. (5) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. ...
Page 14
... Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. ...