Datasheet LT3761, LT3761-1 (Analog Devices) - 28
| Manufacturer | Analog Devices |
| Description | 60VIN LED Controller with Internal PWM Generator |
| Pages / Page | 32 / 28 — Typical applicaTions. 40W SEPIC LED Driver. SEPIC Efficiency,. Output … |
| File Format / Size | PDF / 593 Kb |
| Document Language | English |
Typical applicaTions. 40W SEPIC LED Driver. SEPIC Efficiency,. Output Current vs VIN. PWM Dimming Waveform
Model Line for this Datasheet
Text Version of Document
LT3761/LT3761-1
Typical applicaTions 40W SEPIC LED Driver
C2 L1 2.2µF 10µH ×2 1:1 50V D1 VIN • 8V TO C1 40V 3 1 2 2.2µF 499k • V C3 IN ×2 EN/UVLO GATE M1 10µF 1M 0.15Ω 1.67A 50V V 4 ×5 90.9k REF SENSE 35V 1M LT3761 8mΩ CTRL 49.9k INTVCC 133k GND 100k FB 40W OPENLED ISP LED STRING PWM ISN DIM/SS PWMOUT VC RT INTVCC INTVCC 10nF 10k 28.7k 350kHz 1µF 4.7nF M2 37611 TA06a M1: INFINEON BSC123NO8 D1: DIODES INC PDS5100 L1: COILCRAFT MSD1278-103 M2: VISHAY SILICONIX Si2306BDS LED: CREE XLAMP XM-L (×7) C1, C2: KEMET C1210C225K5 C3: TAIYO YUDEN UMK325BJ106M
SEPIC Efficiency, Output Current vs VIN PWM Dimming Waveform
100 2.1 PWM 96 5V/DIV OUTPUT CURRENT 1.8 OUTPUT CURRENT (A) 92 1.5 ILED 0.5A/DIV EFFICIENCY 88 1.2 EFFICIENCY (%) 37611 TA06c 100µs/DIV 84 0.9 80 0.6 0 10 20 30 40 VIN (V) 37611 TA06b 37611fb 28 For more information www.linear.com/LT3761 Document Outline Features Applications Description Typical Application 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 40W SEPIC LED Driver
C2 L1 2.2µF 10µH ×2 1:1 50V D1 VIN • 8V TO C1 40V 3 1 2 2.2µF 499k • V C3 IN ×2 EN/UVLO GATE M1 10µF 1M 0.15Ω 1.67A 50V V 4 ×5 90.9k REF SENSE 35V 1M LT3761 8mΩ CTRL 49.9k INTVCC 133k GND 100k FB 40W OPENLED ISP LED STRING PWM ISN DIM/SS PWMOUT VC RT INTVCC INTVCC 10nF 10k 28.7k 350kHz 1µF 4.7nF M2 37611 TA06a M1: INFINEON BSC123NO8 D1: DIODES INC PDS5100 L1: COILCRAFT MSD1278-103 M2: VISHAY SILICONIX Si2306BDS LED: CREE XLAMP XM-L (×7) C1, C2: KEMET C1210C225K5 C3: TAIYO YUDEN UMK325BJ106M
SEPIC Efficiency, Output Current vs VIN PWM Dimming Waveform
100 2.1 PWM 96 5V/DIV OUTPUT CURRENT 1.8 OUTPUT CURRENT (A) 92 1.5 ILED 0.5A/DIV EFFICIENCY 88 1.2 EFFICIENCY (%) 37611 TA06c 100µs/DIV 84 0.9 80 0.6 0 10 20 30 40 VIN (V) 37611 TA06b 37611fb 28 For more information www.linear.com/LT3761 Document Outline Features Applications Description Typical Application 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