cat4109 ON Semiconductor, cat4109 Datasheet
cat4109
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cat4109 Summary of contents
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... SCILLC. All rights reserved. Characteristics subject to change without notice DESCRIPTION The CAT4109 is a 3-channel constant-current LED driver, requiring no inductor. LED channel currents up to 175mA are programmed independently via separate external resistors. Low output voltage operation of 0.4V at 175mA allows for more power efficient designs across wider supply voltage range ...
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... CAT4109 ABSOLUTE MAXIMUM RATINGS Parameter VDD Voltage Input Voltage Range (OE, PWM1, PWM2, PWM3) LED1, LED2, LED3 Voltage DC Output Current on LED1 to LED3 Storage Temperature Range Junction Temperature Range Lead Soldering Temperature (10sec.) • Human Body Model ESD Rating on All Pins: • Machine Model ...
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... T LED P1 90% 50% 10% Figure 1. CAT4109 OE Timing Accurate linear dimming compatible with PWM frequencies from 100Hz to 5kHz for PWM duty cycle down to 1%. PWM frequencies up to 50kHz can be supported for duty cycles greater than 10%. When performing a combination of low frequencies and small duty cycles, the device may enter shutdown mode ...
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... CAT4109 TYPICAL PERFORMANCE CHARACTERISTICS 1μ AMB Quiescent Current vs. Input Voltage (I 1.2 No Load 1.0 0.8 0.6 0.4 3.0 3.5 4.0 4.5 INPUT VOLTAGE [V] Quiescent Current vs. Input Voltage (I 6.0 Full Load 5.5 5.0 4.5 4.0 3.0 3.5 4.0 4.5 INPUT VOLTAGE [V] LED Current Change vs. Input Voltage 200 160 120 3.0 3.5 4.0 INPUT VOLTAGE [V] Doc. No. MD-5042, Rev 25°C unless otherwise specified. ...
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... RSET [kΩ] OE Transient Response at 1kHz © 2009 SCILLC. All rights reserved. Characteristics subject to change without notice = 25°C unless otherwise specified. 1.30 1.25 1.20 1.15 1.10 5.0 5 CAT4109 RSET Pin Voltage vs. Temperature - 120 TEMPERATURE [ºC] PWMx Transient Response Doc. No. MD-5042, Rev. A ...
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... CAT4109 PIN DESCRIPTIONS Name Pin Number Function PGND 1 Power Ground. GND 2 Ground Reference. PWM3 3 PWM control input for LED3 PWM2 4 PWM control input for LED2 PWM1 5 PWM control input for LED1 RSET3 6 LED current set pin for LED3 RSET2 7 LED current set pin for LED2 ...
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... PWM2 PWM3 Figure 2. CAT4109 Functional Block Diagram BASIC OPERATION The CAT4109 uses 3 independent current sinks to accurately regulate the current in each LED channel to 400 times the current sink from the corresponding RSET pin. Each of the resistors tied to the RSET1, RSET2, RSET3 pins set the current respectively in the LED1, LED2, and LED3 channels ...
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... CAT4109 APPLICATION INFORMATION POWER DISSIPATION The power dissipation ( the CAT4109 can be D calculated as follows × + Σ LEDN where V is the voltage at the LED pin, and I LEDN the associated LED current. Combinations of high V voltage or high ambient temperature can cause ...
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... All dimensions in millimeters. Angle in degrees. (2) Compiles with JEDEC standard-012. © 2009 SCILLC. All rights reserved. Characteristics subject to change without notice SYMBOL MIN A 1.35 A1 0.10 b 0. 9.80 E 5. 0.25 L 0.40 θ 0º h θ END VIEW 9 CAT4109 NOM MAX 1.75 0.25 0.51 0.25 9.90 10.00 6.00 6.20 3.90 4.00 1.27 BSC 0.50 1.27 8º c Doc. No. MD-5042, Rev. A ...
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... Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard plated finish is NiPdAu. (3) The device used in the above example is a CAT4109V-GT2 (SOIC, NiPdAu, Tape & Reel, 2,000/Reel). (4) For additional temperature options, please contact your nearest ON Semiconductor Sales office. Doc. No. MD-5042, Rev. A (1) ...
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... N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center: Phone: 81-3-5773-3850 11 CAT4109 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative Doc. No. MD-5038, Rev. A ...