LT3519IMS-1#TRPBF Linear Technology, LT3519IMS-1#TRPBF Datasheet
LT3519IMS-1#TRPBF
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LT3519IMS-1#TRPBF Summary of contents
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... PWM provides up to 3000:1 PWM dimming and the CTRL input provides analog dimming. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. True Color PWM is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
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... LT3519EMS-2#PBF LT3519EMS-2#TRPBF LT3519IMS#PBF LT3519IMS#TRPBF LT3519IMS-1#PBF LT3519IMS-1#TRPBF LT3519IMS-2#PBF LT3519IMS-2#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifi cations are at T unless otherwise noted. PARAMETER Switching Frequency Maximum Duty Cycle Switch Current Limit Switch V CESAT Switch Leakage Current CTRL for Full-Scale LED Current CTRL Pin Bias Current PWM Input ...
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LT3519/LT3519-1/LT3519-2 TYPICAL PERFORMANCE CHARACTERISTICS V -V Threshold vs V ISP ISN CTRL 300 V = 12V 24V ISP 250 200 150 100 50 0 –50 0.5 1.0 1 (V) CTRL 3519 G01 V V Threshold ...
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TYPICAL PERFORMANCE CHARACTERISTICS FB Regulation Voltage vs Temperature 1. 12V IN 1.24 1.23 1.22 1.21 1.20 –50 – 100 TEMPERATURE (°C) 3519 G10 Switch Saturation Voltage (V ) CESAT 500 450 400 350 300 ...
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LT3519/LT3519-1/LT3519-2 PIN FUNCTIONS GND (Pins 16): Power Ground and Signal Ground. Tie to GND plane for best thermal performance. OPENLED (Pin 2): Open LED Status Pin. The OPENLED pin asserts if the FB input is greater than ...
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BLOCK DIAGRAM LED ARRAY R SENSE 11 12 ISP ISN + – 4 100mV – + – + 1.1V A1 CTRL + 14 + 1.22V – SHDN/UVLO + 4 2.2μA – 1.22V G4 ...
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LT3519/LT3519-1/LT3519-2 OPERATION The LT3519/LT3519-1/LT3519-2 are constant frequency, current mode regulators with an internal power switch and Schottky. Operation can be best understood by referring to the Block Diagram. At the start of each oscillator cycle, the SR latch is set, ...
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APPLICATIONS INFORMATION Dimming Control There are two methods to control the current source for dimming using the LT3519/LT3519-1/LT3519-2. The fi rst method, PWM Dimming, uses the PWM pin to modulate the current source between zero and full current to achieve ...
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LT3519/LT3519-1/LT3519-2 APPLICATIONS INFORMATION For open LED protection of a boost type LED driver, set the resistor from the output to the FB pin such that the expected V during normal operation will not exceed FB 1.1V. For a buck mode ...
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APPLICATIONS INFORMATION Inductor Selection The inductor used with the LT3519/LT3519-1/LT3519-2 should have a saturation current rating greater. For buck mode LED drivers, the inductor value should be chosen to give a ripple current 150mA or more. In ...
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LT3519/LT3519-1/LT3519-2 APPLICATIONS INFORMATION Open LED Detection The LT3519/LT3519-1/LT3519-2 provide an open-collector status pin, OPENLED, that pulls low when the FB pin is within ~60mV of its 1.22V regulated voltage. If the open LED clamp voltage is programmed correctly using the ...
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TYPICAL APPLICATIONS 30V 1000:1 PWM Dimming at 120Hz PWM 5V/DIV I LED 0.1A/DIV I L 0.3A/DIV V = 12V 2μs/DIV IN LT3519/LT3519-1/LT3519-2 4W Boost Automotive LED Driver L1 68μH C1 1μF SW ANODE CATHODE V ISP ...
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LT3519/LT3519-1/LT3519-2 TYPICAL APPLICATIONS 24V C1 1μF Waveform for Open LED I LED 0.1A/DIV V OUT 10V/DIV OPENLED 10V/DIV V = 12V 50μs/DIV IN 14 Buck-Boost Mode 150mA LED Driver 16V LED 150mA L1 47μ ...
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TYPICAL APPLICATIONS V IN 12V TO 30V C1 (UP TO 40V TRANSIENT) 4.7μF C1: MURATA GRM32ER71H475KA88 C2: TDK C3216X7R1C106M Q1: DIODES FMMT555 PNP Q2: DIODES FMMT494 NPN L1: COILTRONICS DR73-470-R M1: VISHAY SILICONIX Si2337DS 2000:1 PWM Dimming at 120Hz PWM ...
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LT3519/LT3519-1/LT3519-2 TYPICAL APPLICATIONS 20V C1 1μF 100k C1: TDK C3216X7R1H105K C2: MURATA GRM31CR71H225KA88 L1: COILTRONICS DR74-150-R M1: VISHAY SILICONIX Si2318DS R : STACKPOLE ELECTRONICS RHC 2512 2.49 AND 4.99 SENSE NOTE 8.2V RISING TURN-ON ...
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TYPICAL APPLICATIONS V IN 10V TO 25V C1 2.2μF C1: TDK C3216X7R1E225K C2: TDK C1608X7R1C105K Q1: DIODES FMMT555 PNP L1: COILTRONICS DR73-068-R Waveforms for Open LED I LED 0.5A/DIV V – OUT 5V/DIV OPENLED 10V/DIV V = 15V ...
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LT3519/LT3519-1/LT3519-2 PACKAGE DESCRIPTION 5.23 (.206) MIN 0.305 0.038 (.0120 .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR ...
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... Updated to Add LT3519-1 and LT3519-2 Parts Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... V IN OUT(MAX) = 45V, Dimming = 5.000:1 True Color PWM, OUT(MAX) = 45V, Dimming = 3.000:1 True Color PWM, OUT(MAX) = 45V, 3mm × 2mm DFN : 2.5V to 12V OUT(MAX) LT 1109 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2009 = 36V, 3519fa ...