lt3518euf-trpbf Linear Technology Corporation, lt3518euf-trpbf Datasheet
lt3518euf-trpbf
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lt3518euf-trpbf Summary of contents
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... L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. True Color PWM is a trademark of Linear Technology Corporation. Patent Pending. All other trademarks are the property of their respective owners. *Patents Pending. 100 10μ ...
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... T = 36°C/W JMAX JA EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT3518EUF#PBF LT3518EUF#TRPBF LT3518IUF#PBF LT3518IUF#TRPBF LT3518EFE#PBF LT3518EFE#TRPBF LT3518IFE#PBF LT3518IFE#TRPBF LT3518HFE#PBF LT3518HFE#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Minimum V Operating Voltage IN Maximum V Operating Voltage IN Current Sense Voltage (V – ISP ISN 10% Scale Current Sense Voltage (V – V ISP ISN ...
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LT3518 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER V Pin Voltage Line Regulation REF Gate Turn-On Delay Gate Turn-Off Delay Top Gate Drive V (V – ISP TG Note 1: Stresses beyond those ...
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TYPICAL PERFORMANCE CHARACTERISTICS V – V Threshold vs V ISP ISN 120 24V ISP 100 25° 1.0 0 0.2 0.4 0.6 0.8 ...
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LT3518 TYPICAL PERFORMANCE CHARACTERISTICS V – V Threshold vs V ISP ISN 105 CTRL 104 25°C A 103 102 101 100 ...
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PIN FUNCTIONS SW: Switch Pin. Minimize trace at this pin to reduce EMI Input Supply Pin. Must be locally bypassed. IN SHDN: Shutdown Pin. Tie to 1.5V or higher to enable device or 0.4V or less to disable ...
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LT3518 BLOCK DIAGRAM R SENSE PV IN ISP ISN + – CURRENT X10 SENSE AMPLIFIER SHDN – CTRL + 1.01V A2 FB – SYNC + A5 – 10μ ...
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OPERATION The LT3518 is a constant frequency, current mode regula- tor with an internal power switch. Operation can be best understood by referring to the Block Diagram in Figure 1. At the start of each oscillator cycle, the SR latch ...
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LT3518 APPLICATIONS INFORMATION Dimming Control There are two methods to control the current source for dimming using the LT3518. The fi rst method uses the PWM pin to modulate the current source between zero and full current to achieve a ...
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APPLICATIONS INFORMATION For a buck or a buck-boost confi guration, the output voltage is typically level-shifted to a signal with respect to GND as illustrated in the Figure 4. The output can be expressed as • 1.01V + ...
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LT3518 APPLICATIONS INFORMATION Use only ceramic capacitors with X7R, X5R or better dielec- tric as they are best for temperature and DC bias stability of the capacitor value. All ceramic capacitors exhibit loss of capacitance value with increasing DC voltage ...
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APPLICATIONS INFORMATION Switching Frequency There are two methods to set the switching frequency of LT3518. Both methods require a resistor connected at R pin. Do not leave the R pin open. Also, do not load this pin T with a ...
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LT3518 TYPICAL APPLICATIONS Buck Mode 1.5A LED Driver R SENSE 68mΩ 24V C2 2.2μF ISP ISN 3.3V C1 SHDN 2.2μF LT3518 V CTRL FB REF PWM PWM SS SYNC R T ...
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TYPICAL APPLICATIONS 16V C1 2.2μF C1: KEMET C0806C225K4RAC C2: KEMET C1206C475K3RAC C3, C4: MURATA GRM21BR71H104KA01B C5: MURATA GRM21BR71H224KA01B D1: ZETEX ZLLS2000TA L1: TOKO B992AS-4R3N LEDS: LUXEON I (WHITE) M1: ZETEX ZXMP6A13GTA 3000:1 PWM Dimming at 120Hz ...
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LT3518 TYPICAL APPLICATIONS Buck Mode 1A LED Driver with Open LED Protection and Sync Input PV IN 32V C2 2.2μ 3.3V C1 2.2μF V REF PWM SYNC 3.3V, 1.2MHz 1000:1 PWM Dimming at 120Hz PWM 5V/DIV I LED ...
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TYPICAL APPLICATIONS 16V PWM C1 2.2μF C4 0.1μF 3000:1 PWM Dimming at 100Hz PWM 5V/DIV I LED 200mA/DIV I L1 1A/DIV V = 12V 1μs/DIV 1MHz OSC I = 300mA LED Boost 300mA ...
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LT3518 PACKAGE DESCRIPTION 4.35 ± 0.05 2.15 ± 0.05 2.90 ± 0.05 (4 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 4.00 ± 0.10 (4 SIDES) PIN 1 TOP MARK (NOTE 6) NOTE: 1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 ...
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... DIMENSIONS ARE IN 3. DRAWING NOT TO SCALE 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. FE Package ...
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... Dimming = 1000:1 True Color PWM, OUT(MAX) = 45V, Dimming = 3000:1 True Color PWM, OUT(MAX) = 45V, Dimming = 5000:1 True Color PWM, OUT(MAX) = Ext FET, Dimming = 3000:1 True Color PWM, OUT(MAX) LT 0308 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 < 1μA, 3518fb ...