Datasheet LT3518 (Analog Devices) - 13
| Manufacturer | Analog Devices |
| Description | Full-Featured LED Driver with 2.3A Switch Current |
| Pages / Page | 20 / 13 — typical applications. Buck Mode 1.5A LED Driver. 1000:1 PWM Dimming at … |
| File Format / Size | PDF / 465 Kb |
| Document Language | English |
typical applications. Buck Mode 1.5A LED Driver. 1000:1 PWM Dimming at 120Hz
Model Line for this Datasheet
- LT3518EFE#PBF LT3518EFE#PBF LT3518EFE#TRPBF LT3518EFE#TRPBF LT3518EUF#PBF LT3518EUF#PBF LT3518EUF#TRPBF LT3518EUF#TRPBF LT3518HFE#PBF LT3518HFE#PBF LT3518HFE#TRPBF LT3518HFE#TRPBF LT3518HUF#PBF LT3518HUF#PBF LT3518HUF#TRPBF LT3518HUF#TRPBF LT3518IFE#PBF LT3518IFE#PBF LT3518IFE#TRPBF LT3518IFE#TRPBF LT3518IUF#PBF LT3518IUF#PBF LT3518IUF#TRPBF LT3518IUF#TRPBF
Text Version of Document
LT3518
typical applications Buck Mode 1.5A LED Driver
R C3 SENSE 68mΩ M1 10µF
1000:1 PWM Dimming at 120Hz
PVIN 24V C2 2.2µF 1.5A L1 15µH PWM ISP ISN TG D1 5V/DIV VIN VIN SW 3.3V C1 SHDN ILED 2.2µF 1A/DIV LT3518 VREF CTRL FB I PWM PWM SS L 1A/DIV SYNC RT PV 3518 TA02b IN = 24V 2µs/DIV TGEN VREF VC GND fOSC = 1MHz RT ILED = 1.5A 16.9k C5 C4 1MHz 0.1µF 0.1µF 3518 TA02a C1: KEMET C0805C225K4RAC C2: MURATA GRM31MR71E225KA93 C3: MURATA GRM32DR71E106KA12B C4, C5: MURATA GRM21BR71H104KA01B D1: ZETEX ZLLS2000TA L1: TOKO B992AS-150M LEDS: LUXEON K2 (WHITE) M1: ZETEX ZXMP6A13GTA
500mA, 5V to 12V Boost Converter with Accurate Input Current Limit
RSENSE L1
Efficiency
D1 50mΩ 4.3µH VOUT VIN 12V 5V 90 500mA C2 R1 2.2µF 549k ISP TG ISN SW 80 VIN FB CTRL PWM C2 70 LT3518 SHDN SHDN SYNC 10µF TGEN EFFICIENCY (%) R2 V 60 REF RT 49.9k VC GND SS R3 C3 RT 10k 50 0.1µF 6.04k 0 100 200 300 400 500 C4 2MHz 10nF ILOAD (mA) 3518 TA03a 3518 TA03b C1: KEMET C0805C225K4RAC C2: KEMET C1206C106K4RAC C3: MURATA GRM21BR71H104KA01B C4: MURATA GCM033R71A103KA03 D1: ZETEX ZLLS2000TA L1: TOKO B992AS-4R3N 3518ff For more information www.linear.com/LT3518 13 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
typical applications Buck Mode 1.5A LED Driver
R C3 SENSE 68mΩ M1 10µF
1000:1 PWM Dimming at 120Hz
PVIN 24V C2 2.2µF 1.5A L1 15µH PWM ISP ISN TG D1 5V/DIV VIN VIN SW 3.3V C1 SHDN ILED 2.2µF 1A/DIV LT3518 VREF CTRL FB I PWM PWM SS L 1A/DIV SYNC RT PV 3518 TA02b IN = 24V 2µs/DIV TGEN VREF VC GND fOSC = 1MHz RT ILED = 1.5A 16.9k C5 C4 1MHz 0.1µF 0.1µF 3518 TA02a C1: KEMET C0805C225K4RAC C2: MURATA GRM31MR71E225KA93 C3: MURATA GRM32DR71E106KA12B C4, C5: MURATA GRM21BR71H104KA01B D1: ZETEX ZLLS2000TA L1: TOKO B992AS-150M LEDS: LUXEON K2 (WHITE) M1: ZETEX ZXMP6A13GTA
500mA, 5V to 12V Boost Converter with Accurate Input Current Limit
RSENSE L1
Efficiency
D1 50mΩ 4.3µH VOUT VIN 12V 5V 90 500mA C2 R1 2.2µF 549k ISP TG ISN SW 80 VIN FB CTRL PWM C2 70 LT3518 SHDN SHDN SYNC 10µF TGEN EFFICIENCY (%) R2 V 60 REF RT 49.9k VC GND SS R3 C3 RT 10k 50 0.1µF 6.04k 0 100 200 300 400 500 C4 2MHz 10nF ILOAD (mA) 3518 TA03a 3518 TA03b C1: KEMET C0805C225K4RAC C2: KEMET C1206C106K4RAC C3: MURATA GRM21BR71H104KA01B C4: MURATA GCM033R71A103KA03 D1: ZETEX ZLLS2000TA L1: TOKO B992AS-4R3N 3518ff For more information www.linear.com/LT3518 13 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
