Datasheet LT3755, LT3755-1, LT3755-2 (Analog Devices) - 21
| 制造商 | Analog Devices |
| 描述 | 40VIN, 75VOUT LED Controllers |
| 页数 / 页 | 28 / 21 — TYPICAL APPLICATIONS. 50W White LED Headlamp Driver. Waveforms for 50W … |
| 修订版 | E |
| 文件格式/大小 | PDF / 509 Kb |
| 文件语言 | 英语 |
TYPICAL APPLICATIONS. 50W White LED Headlamp Driver. Waveforms for 50W LED Driver with. PWM Disconnect NFET
该数据表的模型线
- LT3755EMSE#PBF LT3755EMSE#TRPBF LT3755EMSE#WPBF LT3755EMSE#WTRPBF LT3755EMSE-1#PBF LT3755EMSE-1#TRPBF LT3755EMSE-1#WPBF LT3755EMSE-1#WTRPBF LT3755EMSE-2#PBF LT3755EMSE-2#TRPBF LT3755EMSE-2#WPBF LT3755EMSE-2#WTRPBF LT3755EUD#PBF LT3755EUD#TRPBF LT3755EUD-1#PBF LT3755EUD-1#TRPBF LT3755EUD-2#PBF LT3755EUD-2#TRPBF LT3755HMSE-2#PBF LT3755HMSE-2#TRPBF LT3755HMSE-2#WPBF LT3755HMSE-2#WTRPBF LT3755IMSE#PBF LT3755IMSE#TRPBF LT3755IMSE#WPBF LT3755IMSE#WTRPBF LT3755IMSE-1#PBF LT3755IMSE-1#TRMPBF LT3755IMSE-1#TRPBF LT3755IMSE-1#WPBF LT3755IMSE-1#WTRPBF LT3755IMSE-2#PBF LT3755IMSE-2#TRPBF LT3755IMSE-2#WPBF LT3755IMSE-2#WTRPBF LT3755IUD#PBF LT3755IUD#TRPBF LT3755IUD-1#PBF LT3755IUD-1#TRPBF LT3755IUD-2#PBF LT3755IUD-2#TRPBF LT3755JMSE-2#PBF LT3755JMSE-2#TRPBF LT3755JMSE-2#WPBF LT3755JMSE-2#WTRPBF
文件文字版本
LT3755/LT3755-1/LT3755-2
TYPICAL APPLICATIONS 50W White LED Headlamp Driver
L1 22µH D1 VIN 8V TO 40V CIN R1 R3 COUT V 4.7µF 1M IN 1M 4.7µF SHDN/UVLO FB R2 V R4 REF ISP 187k 23.7k 16.9k LT3755-2 RLED 1A CTRL 0.1Ω INTV ISN CC 100k NTC GATE M1 100k RT1 SENSE OPENLED RSENSE PWM 0.015Ω 50W LED SS STRING CSS RT PWMOUT 0.01µF VC GND INTVCC RT 28.7k RC C 375kHz VCC 10k 4.7µF CC 0.001µF M2 L1: COILTRONICS DR127-220 37551 TA02a M1: VISHAY SILICONIX SI7850DP SEE SUGGESTED LAYOUT, FIGURE 5 D1: DIODES INC. PDS5100 M2: VISHAY SILICONIX SI2308DS RT1: MURATA NCP18WM1045
Waveforms for 50W LED Driver with PWM Disconnect NFET
PWM VIN = 12V 0V TO 5V VOUT = 50V 10V/DIV IL1 2A/DIV ILED 500mA/DIV 37551 TA02b 50µs/DIV
V(ISP-ISN) Threshold vs Temperature Efficiency vs Load for NTC Resistor Divider
100 120 VIN = 12V 96 100 80 92 60 88 THRESHOLD (mV) EFFICIENCY (%) 40 84 V (ISP-ISN) 20 80 0 0.0 0.2 0.4 0.6 0.8 1.0 25 45 65 85 105 125 LOAD (A) TEMPERATURE (°C) 37551 TA02c 37551 TA02d Rev. E For more information www.analog.com 21 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 50W White LED Headlamp Driver
L1 22µH D1 VIN 8V TO 40V CIN R1 R3 COUT V 4.7µF 1M IN 1M 4.7µF SHDN/UVLO FB R2 V R4 REF ISP 187k 23.7k 16.9k LT3755-2 RLED 1A CTRL 0.1Ω INTV ISN CC 100k NTC GATE M1 100k RT1 SENSE OPENLED RSENSE PWM 0.015Ω 50W LED SS STRING CSS RT PWMOUT 0.01µF VC GND INTVCC RT 28.7k RC C 375kHz VCC 10k 4.7µF CC 0.001µF M2 L1: COILTRONICS DR127-220 37551 TA02a M1: VISHAY SILICONIX SI7850DP SEE SUGGESTED LAYOUT, FIGURE 5 D1: DIODES INC. PDS5100 M2: VISHAY SILICONIX SI2308DS RT1: MURATA NCP18WM1045
Waveforms for 50W LED Driver with PWM Disconnect NFET
PWM VIN = 12V 0V TO 5V VOUT = 50V 10V/DIV IL1 2A/DIV ILED 500mA/DIV 37551 TA02b 50µs/DIV
V(ISP-ISN) Threshold vs Temperature Efficiency vs Load for NTC Resistor Divider
100 120 VIN = 12V 96 100 80 92 60 88 THRESHOLD (mV) EFFICIENCY (%) 40 84 V (ISP-ISN) 20 80 0 0.0 0.2 0.4 0.6 0.8 1.0 25 45 65 85 105 125 LOAD (A) TEMPERATURE (°C) 37551 TA02c 37551 TA02d Rev. E For more information www.analog.com 21 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