Datasheet LT3743 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | High Current Synchronous Step-Down LED Driver with Three-State Control |
| 页数 / 页 | 28 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. PWM Driver RDS(0N). HG Driver … |
| 文件格式/大小 | PDF / 535 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. PWM Driver RDS(0N). HG Driver RDS(ON). LG Driver RDS(ON). Non-Overlap PWM Signal Delay
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LT3743
TYPICAL PERFORMANCE CHARACTERISTICS PWM Driver RDS(0N) HG Driver RDS(ON) LG Driver RDS(ON)
5 5 5 4 4 4 PMOS 3 3 3 (Ω) (Ω) PMOS (Ω) PMOS R DS(ON) 2 R DS(ON) 2 R DS(ON) 2 NMOS NMOS NMOS 1 1 1 0 0 0 –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 G19 3743 G20 3743 G21
Non-Overlap PWM Signal Delay Non-Overlap Time Minimum On-Time
150 150 150 140 120 120 HG TO LG PWMGL TO PWMGH 130 90 90 Y (ns) HG PWMGH TO PWMGL LG TO HG DELA 120 60 60 LG NON-OVERLAP TIME (ns) MINIMUM ON-TIME (ns) 110 30 30 100 0 0 –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 G22 3743 G23 3743 G24
Regulation Accuracy Regulation Accuracy Minimum Off-Time CTRL_H = 1.5V, VIN = 12V CTRL_H = 0.75V, VIN = 12V
300 3 6 2 4 240 LG 1 2 180 0 0 120 ACCURACY (%) –1 ACCURACY (%) –2 MINIMUM OFF-TIME (ns) HG 60 –2 –4 0 –3 –6 –50 –15 20 55 90 125 0 2.5 5.0 7.5 10 0 2.5 5.0 7.5 10 TEMPERATURE (°C) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 3743 G25 3743 G26 3743 G27 3743fe For more information www.linear.com/LT3743 7 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 PWM Driver RDS(0N) HG Driver RDS(ON) LG Driver RDS(ON)
5 5 5 4 4 4 PMOS 3 3 3 (Ω) (Ω) PMOS (Ω) PMOS R DS(ON) 2 R DS(ON) 2 R DS(ON) 2 NMOS NMOS NMOS 1 1 1 0 0 0 –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 G19 3743 G20 3743 G21
Non-Overlap PWM Signal Delay Non-Overlap Time Minimum On-Time
150 150 150 140 120 120 HG TO LG PWMGL TO PWMGH 130 90 90 Y (ns) HG PWMGH TO PWMGL LG TO HG DELA 120 60 60 LG NON-OVERLAP TIME (ns) MINIMUM ON-TIME (ns) 110 30 30 100 0 0 –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 G22 3743 G23 3743 G24
Regulation Accuracy Regulation Accuracy Minimum Off-Time CTRL_H = 1.5V, VIN = 12V CTRL_H = 0.75V, VIN = 12V
300 3 6 2 4 240 LG 1 2 180 0 0 120 ACCURACY (%) –1 ACCURACY (%) –2 MINIMUM OFF-TIME (ns) HG 60 –2 –4 0 –3 –6 –50 –15 20 55 90 125 0 2.5 5.0 7.5 10 0 2.5 5.0 7.5 10 TEMPERATURE (°C) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 3743 G25 3743 G26 3743 G27 3743fe For more information www.linear.com/LT3743 7 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