Datasheet LT3743 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | High Current Synchronous Step-Down LED Driver with Three-State Control |
| 页数 / 页 | 28 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. EN/UVLO Threshold (Falling). EN/UVLO … |
| 文件格式/大小 | PDF / 535 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. EN/UVLO Threshold (Falling). EN/UVLO Pin Current. IQ in Shutdown
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LT3743
TYPICAL PERFORMANCE CHARACTERISTICS EN/UVLO Threshold (Falling) EN/UVLO Pin Current IQ in Shutdown
1.70 10 0.5 1.64 8 0.4 1.58 6 0.3 –50°C (µA) I Q 130°C 1.52 4 0.2 130°C EN/UVLO THRESHOLD (V) 1.46 EN/UVLO PIN CURRENT (µA) 2 25°C 0.1 130°C –50°C 25°C 1.40 0 0 6 12 18 24 30 36 6 12 18 24 30 36 0 8 16 24 32 40 VIN (V) VIN (V) VIN (V) 3743 G01 3743 G02 3743 G03
Quiescent Current (Non-Switching) VREF Pin Voltage VREF Current Limit
2.0 2.02 1.6 1.6 2.01 1.4 TA = 25°C 1.2 2.00 VIN = 36V T TAGE (V) A = 130°C (mA) 1.2 0.8 VOL 1.99 VIN = 6V I LIMIT V REF TA = –50°C QUIESCENT CURRENT (mA) 1.0 0.4 T 1.98 A = 25°C TA = 130°C TA = –50°C 0 1.97 0.8 6 12 18 24 30 36 –50 –15 20 55 90 125 6 12 18 24 30 36 VIN (V) TEMPERATURE (°C) VIN (V) 3743 G04 3743 G05 3743 G06
Oscillator Frequency RT Pin Current Limit Soft-Start Pin Current
1.5 90 7 1.2MHz 1.2 80 6 900kHz V 0.9 70 IN = 36V (µA) (µA) 5 V I SS IN = 6V 0.6 I LIMIT 60 FREQUENCY (MHz) 4 0.3 220kHz 50 0 40 3 –50 –15 20 55 90 125 –50 –15 20 55 90 125 –50 –15 20 55 90 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3743 G07 3743 G08 3743 G09 3743fe For more information www.linear.com/LT3743 5 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 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 PERFORMANCE CHARACTERISTICS EN/UVLO Threshold (Falling) EN/UVLO Pin Current IQ in Shutdown
1.70 10 0.5 1.64 8 0.4 1.58 6 0.3 –50°C (µA) I Q 130°C 1.52 4 0.2 130°C EN/UVLO THRESHOLD (V) 1.46 EN/UVLO PIN CURRENT (µA) 2 25°C 0.1 130°C –50°C 25°C 1.40 0 0 6 12 18 24 30 36 6 12 18 24 30 36 0 8 16 24 32 40 VIN (V) VIN (V) VIN (V) 3743 G01 3743 G02 3743 G03
Quiescent Current (Non-Switching) VREF Pin Voltage VREF Current Limit
2.0 2.02 1.6 1.6 2.01 1.4 TA = 25°C 1.2 2.00 VIN = 36V T TAGE (V) A = 130°C (mA) 1.2 0.8 VOL 1.99 VIN = 6V I LIMIT V REF TA = –50°C QUIESCENT CURRENT (mA) 1.0 0.4 T 1.98 A = 25°C TA = 130°C TA = –50°C 0 1.97 0.8 6 12 18 24 30 36 –50 –15 20 55 90 125 6 12 18 24 30 36 VIN (V) TEMPERATURE (°C) VIN (V) 3743 G04 3743 G05 3743 G06
Oscillator Frequency RT Pin Current Limit Soft-Start Pin Current
1.5 90 7 1.2MHz 1.2 80 6 900kHz V 0.9 70 IN = 36V (µA) (µA) 5 V I SS IN = 6V 0.6 I LIMIT 60 FREQUENCY (MHz) 4 0.3 220kHz 50 0 40 3 –50 –15 20 55 90 125 –50 –15 20 55 90 125 –50 –15 20 55 90 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3743 G07 3743 G08 3743 G09 3743fe For more information www.linear.com/LT3743 5 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 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