Specifications | |2138|1094|1003| LT3003 - 3-Channel LED Ballaster with PWM Datasheet Linear Technology Corporation |
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Specifications | |2138|1094|1003| LT3003 - 3-Channel LED Ballaster with PWM Datasheet Linear Technology Corporation |
Business section |
Specifications | |2138|1094|1003| LT3003 - 3-Channel LED Ballaster with PWM Datasheet Linear Technology Corporation |
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Content | LT3003 1 3003fa TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION LED1 8 × 3 = 24 LEDs 350mA PER STRING VMAX SHDN VIN PWM LED2 LT3003 LED3 0.1Ω VEEGNDOT2OT1 CAP10µH1nF 10µF 0.33µFLED VINVIN3V TO 16V VC 3003 TA01a 1µF 1µF PVIN32V GND SIMPLIFIED LT3476 SW PWM PWM DIMMING TOTAL LED CURRENT (mA) 060 EFFICIENCY (%) 65 70 75 80 90 200400600800 3003 TA01b 10001200 85 PVIN = 32V NUMBER OF LEDS = 8 × 3 = 24 3-Channel LED Ballaster with PWM The LT®3003 drives three separate strings of LEDs up to 350mA/channel with 3% accurate current matching, resulting in uniform LED brightness and intensity. This approach is superior to conventional methods of running three separate channels with external ballast resistors requiring expensive factory calibration. The LT3003 operates in boost, buck and buck-boost mode. A True Color PWM Dimming ratio of up to 3000:1 is achiev- able using a logic-level signal at the PWM pin for all modes without the need for external level-shifting circuitry. For applications with input supply above and below the output voltage of the LED strings, the LT3003 allows the LEDs to be returned to the input supply (buck-boost mode) instead of being limited to only SEPIC solutions. The LT3003 is ideal for high power LED driver applications such as TFT LCD backlighting and heads-up displays. Ad- ditional overtemperature outputs allow appropriate system management for increased reliability. The LT3003 is available in a small 10-pin MSE package. ■ High Power LED Ballaster ■ Automotive Lighting ■ Video Cameras ■ TFT LCD Backlighting ■ 3% LED Current Matching ■ Up to 350mA Continuous Current per LED String ■ Up to 3000:1 True Color PWMTM Dimming Range ■ PWM Input Disconnects LED Strings ■ Can Operate in Buck, Boost and Buck-Boost Modes ■ Wide Input Range: 3V to 40V ■ Overtemperature Outputs ■ Works with LT1618, LT3477, LT3474, LT3475, LT3476, LTC®3783 ■ Thermally Enhanced 10-Pin MSOP Package , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. True Color PWM is a trademark of Linear Technolology Corporation. All other trademarks are the property of their respective owners. Buck Mode LT3003 with the LT3476Effi ciency |
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Following Datasheets | 30041111 (1 pages) 30041116 (1 pages) 30041117 (1 pages) 30042901 (1 pages) 30042907 (1 pages) 30042922 (1 pages) 30043203 (1 pages) 30043205 (1 pages) 30043747 (1 pages) 30043769 (1 pages) |
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