Datasheet LT3796, LT3796-1 (Analog Devices) - 36
| Manufacturer | Analog Devices |
| Description | 100V Constant-Current and Constant-Voltage Controller with Dual Current Sense |
| Pages / Page | 36 / 36 — Typical applicaTion. Buck-Boost Mode LED Driver with Open LED Clamp and … |
| File Format / Size | PDF / 522 Kb |
| Document Language | English |
Typical applicaTion. Buck-Boost Mode LED Driver with Open LED Clamp and Output Voltage Limit. Efficiency vs VIN
Model Line for this Datasheet
Text Version of Document
LT3796/LT3796-1
Typical applicaTion Buck-Boost Mode LED Driver with Open LED Clamp and Output Voltage Limit
VIN L1 68µH D1 9V TO 55V 75V (TRANSIENT) R4 R5 C1 C3 715k 20k C2 2.2µF 4.7µF 1µF ×2 ×2 R6 R1 200k VIN 1M VIN CSN CSP VS
Efficiency vs VIN
EN/UVLO GATE M1 R2 R7 100 187k CTRL SENSE PWM = VREF 1M R V SNS REF 33mΩ 95 LT3796 R8 CSOUT GND 13.3k R3 90 249k FB1 FB2 PWM PWM ISP 85 RLED LED CURRENT REPORTING ISMON 1Ω EFFICIENCY (%) C4 80 ISN INTVCC 0.1µF R10 R9 TG M2 75 100k 100k FAULT FAULT 70 VMODE VMODE INTVCC INTVCC 0 10 20 30 40 50 60 25V LED VC RT SYNC SS C5 250mA VIN (V) 4.7µF M1: FAIRCHILD SEMICONDUCTOR R 37961 TA07b T R C6 C FDM3622 19.6k 4.99k 0.1µF M2: ZETEX ZXMP6A13F 400kHz L1: WÜRTH 744066680 CC VIN 37961 TA07a D1: IRF 10BQ100 10nF LED: CREE XLAMP XR-E
relaTeD parTs PART NUMBER DESCRIPTION COMMENTS
LT3755/LT3755-1 High Side 60V, 1MHz LED Controller with VIN: 4.5V to 40V, VOUT Range: 5V to 60V, True Color PWM, Analog = 3000:1, ISD < 1µA, LT3755-2 True Color 3,000:1 PWM Dimming 3mm × 3mm QFN-16, MSOP-16E Packages LT3756/LT3756-1 High Side 100V, 1MHz LED Controller with VIN: 6V to 100V, VOUT Range: 5V to 100V, True Color PWM, Analog = 3000:1, ISD < 1µA, LT3756-2 True Color 3,000:1 PWM Dimming 3mm × 3mm QFN-16, MSOP-16E Packages LT3743 Synchronous Step-Down 20A LED Driver VIN: 5.5V to 36V, VOUT Range: 5.5V to 35V, True Color PWM, Analog = 3000:1, ISD < 1µA, with Three-State LED Current Control 4mm × 5mm QFN-28, TSSOP-28E Packages LT3791 60V, Synchronous Buck-Boost LED Driver VIN: 4.7V to 60V, VOUT Range: 1.2V to 60V, True Color PWM, Analog, ISD < 1µA, Controller TSSOP-38E Package LT3791-1 60V, Synchronous Buck-Boost Controller VIN: 4.7V to 60V, VOUT Range: 1.2V to 60V, ISD < 1µA, TSSOP-38E Package LT3517 1.3A, 2.5MHz High Current LED Driver VIN: 3V to 30V, True Color PWM, Analog = 3000:1, ISD < 1µA, 4mm × 4mm QFN-16 with 3,000:1 Dimming Package LT3518 2.3A, 2.5MHz High Current LED Driver VIN: 3V to 30V, True Color PWM, Analog = 3000:1, ISD < 1µA, 4mm × 4mm QFN-16 with 3,000:1 Dimming Package LT3474/LT3474-1 36V, 1A (ILED), 2MHz, Step-Down LED VIN: 4V to 36V, VOUT Range = 13.5V, True Color PWM = 400:1, ISD < 1µA, TSSOP-16E Driver Package LT3475/LT3475-1 Dual 1.5A(ILED), 36V, 2MHz, Step-Down VIN: 4V to 36V, VOUT Range = 13.5V, True Color PWM, Analog = 3000:1, ISD < 1µA, LED Driver TSSOP-20E Package 3796fb 36 LT 0314 REV B • PRINTED IN USA Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 950 F3or5 -m 7 o4re 1 7information www.linear.com/3796 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/3796 LINEAR TECHNOLOGY CORPORATION 2012 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 applicaTion Buck-Boost Mode LED Driver with Open LED Clamp and Output Voltage Limit
VIN L1 68µH D1 9V TO 55V 75V (TRANSIENT) R4 R5 C1 C3 715k 20k C2 2.2µF 4.7µF 1µF ×2 ×2 R6 R1 200k VIN 1M VIN CSN CSP VS
Efficiency vs VIN
EN/UVLO GATE M1 R2 R7 100 187k CTRL SENSE PWM = VREF 1M R V SNS REF 33mΩ 95 LT3796 R8 CSOUT GND 13.3k R3 90 249k FB1 FB2 PWM PWM ISP 85 RLED LED CURRENT REPORTING ISMON 1Ω EFFICIENCY (%) C4 80 ISN INTVCC 0.1µF R10 R9 TG M2 75 100k 100k FAULT FAULT 70 VMODE VMODE INTVCC INTVCC 0 10 20 30 40 50 60 25V LED VC RT SYNC SS C5 250mA VIN (V) 4.7µF M1: FAIRCHILD SEMICONDUCTOR R 37961 TA07b T R C6 C FDM3622 19.6k 4.99k 0.1µF M2: ZETEX ZXMP6A13F 400kHz L1: WÜRTH 744066680 CC VIN 37961 TA07a D1: IRF 10BQ100 10nF LED: CREE XLAMP XR-E
relaTeD parTs PART NUMBER DESCRIPTION COMMENTS
LT3755/LT3755-1 High Side 60V, 1MHz LED Controller with VIN: 4.5V to 40V, VOUT Range: 5V to 60V, True Color PWM, Analog = 3000:1, ISD < 1µA, LT3755-2 True Color 3,000:1 PWM Dimming 3mm × 3mm QFN-16, MSOP-16E Packages LT3756/LT3756-1 High Side 100V, 1MHz LED Controller with VIN: 6V to 100V, VOUT Range: 5V to 100V, True Color PWM, Analog = 3000:1, ISD < 1µA, LT3756-2 True Color 3,000:1 PWM Dimming 3mm × 3mm QFN-16, MSOP-16E Packages LT3743 Synchronous Step-Down 20A LED Driver VIN: 5.5V to 36V, VOUT Range: 5.5V to 35V, True Color PWM, Analog = 3000:1, ISD < 1µA, with Three-State LED Current Control 4mm × 5mm QFN-28, TSSOP-28E Packages LT3791 60V, Synchronous Buck-Boost LED Driver VIN: 4.7V to 60V, VOUT Range: 1.2V to 60V, True Color PWM, Analog, ISD < 1µA, Controller TSSOP-38E Package LT3791-1 60V, Synchronous Buck-Boost Controller VIN: 4.7V to 60V, VOUT Range: 1.2V to 60V, ISD < 1µA, TSSOP-38E Package LT3517 1.3A, 2.5MHz High Current LED Driver VIN: 3V to 30V, True Color PWM, Analog = 3000:1, ISD < 1µA, 4mm × 4mm QFN-16 with 3,000:1 Dimming Package LT3518 2.3A, 2.5MHz High Current LED Driver VIN: 3V to 30V, True Color PWM, Analog = 3000:1, ISD < 1µA, 4mm × 4mm QFN-16 with 3,000:1 Dimming Package LT3474/LT3474-1 36V, 1A (ILED), 2MHz, Step-Down LED VIN: 4V to 36V, VOUT Range = 13.5V, True Color PWM = 400:1, ISD < 1µA, TSSOP-16E Driver Package LT3475/LT3475-1 Dual 1.5A(ILED), 36V, 2MHz, Step-Down VIN: 4V to 36V, VOUT Range = 13.5V, True Color PWM, Analog = 3000:1, ISD < 1µA, LED Driver TSSOP-20E Package 3796fb 36 LT 0314 REV B • PRINTED IN USA Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 950 F3or5 -m 7 o4re 1 7information www.linear.com/3796 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/3796 LINEAR TECHNOLOGY CORPORATION 2012 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
