Datasheet LT3761, LT3761-1 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 60VIN LED Controller with Internal PWM Generator |
| 页数 / 页 | 32 / 6 — Typical perFormance characTerisTics TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 593 Kb |
| 文件语言 | 英语 |
Typical perFormance characTerisTics TA = 25°C, unless otherwise noted. SENSE Current Limit Threshold
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LT3761/LT3761-1
Typical perFormance characTerisTics TA = 25°C, unless otherwise noted. SENSE Current Limit Threshold EN/UVLO Hysteresis Current EN/UVLO Threshold vs Temperature vs Temperature vs Temperature
110 2.8 1.27 2.6 105 1.25 RISING 2.4 100 1.23 2.2 FALLING SENSE THRESHOLD (mV) 95 EN/UVLO CURRENT (µA) 1.21 2.0 EN/UVLO THRESHOLD (V) 90 1.8 1.19 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 37611 G11 37611 G10 37611 G12
INTVCC Current Limit vs INTVCC Dropout Voltage VISP-ISN C/10 Threshold vs Temperature vs Current, Temperature vs Temperature
40 0 35 –0.2 ISP = 24V 38 –0.4 TA = –45°C 30 –0.6 36 TA = 25°C 25 –0.8 (mV) ISN = 0V –1.0 34 20 CURRENT LIMIT (mA) V ISP-ISN LDO DROPOUT (V) –1.2 CC TA = 130°C INTV 32 –1.4 15 –1.6 V 30 IN = 7V –1.8 10 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) LDO CURRENT (mA) TEMPERATURE (°C) 37611 G15 37611 G13 37611 G14
PWM Signal Generator Duty Ratio PWM Signal Generator Frequency vs DIM/SS Current vs Duty Ratio PWMOUT Waveform
100 340 CPWM = 47nF CPWMOUT = 2.2nF PWM 80 320 INPUT 5V/DIV TIO (%) 60 PWMOUT Y RA 300 5V/DIV 40 PWMOUT DUT 280 20 PWMOUT FREQUENCY (Hz) 37611 G18 200ns/DIV 0 260 –10 0 10 20 30 40 50 0 20 40 60 80 100 DIM/SS CURRENT (µA) DUTY RATIO (%) 37611 G16 37611 G17 37611fb 6 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 perFormance characTerisTics TA = 25°C, unless otherwise noted. SENSE Current Limit Threshold EN/UVLO Hysteresis Current EN/UVLO Threshold vs Temperature vs Temperature vs Temperature
110 2.8 1.27 2.6 105 1.25 RISING 2.4 100 1.23 2.2 FALLING SENSE THRESHOLD (mV) 95 EN/UVLO CURRENT (µA) 1.21 2.0 EN/UVLO THRESHOLD (V) 90 1.8 1.19 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 37611 G11 37611 G10 37611 G12
INTVCC Current Limit vs INTVCC Dropout Voltage VISP-ISN C/10 Threshold vs Temperature vs Current, Temperature vs Temperature
40 0 35 –0.2 ISP = 24V 38 –0.4 TA = –45°C 30 –0.6 36 TA = 25°C 25 –0.8 (mV) ISN = 0V –1.0 34 20 CURRENT LIMIT (mA) V ISP-ISN LDO DROPOUT (V) –1.2 CC TA = 130°C INTV 32 –1.4 15 –1.6 V 30 IN = 7V –1.8 10 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) LDO CURRENT (mA) TEMPERATURE (°C) 37611 G15 37611 G13 37611 G14
PWM Signal Generator Duty Ratio PWM Signal Generator Frequency vs DIM/SS Current vs Duty Ratio PWMOUT Waveform
100 340 CPWM = 47nF CPWMOUT = 2.2nF PWM 80 320 INPUT 5V/DIV TIO (%) 60 PWMOUT Y RA 300 5V/DIV 40 PWMOUT DUT 280 20 PWMOUT FREQUENCY (Hz) 37611 G18 200ns/DIV 0 260 –10 0 10 20 30 40 50 0 20 40 60 80 100 DIM/SS CURRENT (µA) DUTY RATIO (%) 37611 G16 37611 G17 37611fb 6 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