Datasheet LT3741, LT3741-1 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | High Power, Constant Current, Constant Voltage, Step-Down Controller |
| Pages / Page | 24 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. Minimum On-Time. Oscillator … |
| File Format / Size | PDF / 639 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Minimum On-Time. Oscillator Frequency. Overcurrent Threshold. Current Regulation Accuracy
Model Line for this Datasheet
- LT3741EFE#PBF LT3741EFE#PBF LT3741EFE#TRPBF LT3741EFE#TRPBF LT3741EFE-1#PBF LT3741EFE-1#TRPBF LT3741EUF#PBF LT3741EUF#PBF LT3741EUF#TRPBF LT3741EUF#TRPBF LT3741EUF-1#PBF LT3741EUF-1#TRPBF LT3741IFE#PBF LT3741IFE#PBF LT3741IFE#TRPBF LT3741IFE#TRPBF LT3741IFE-1#PBF LT3741IFE-1#TRPBF LT3741IUF#PBF LT3741IUF#PBF LT3741IUF#TRPBF LT3741IUF#TRPBF LT3741IUF-1#PBF LT3741IUF-1#TRPBF
Text Version of Document
LT3741/LT3741-1
TYPICAL PERFORMANCE CHARACTERISTICS Minimum On-Time Oscillator Frequency Overcurrent Threshold
150 1.5 120 1.2MHz 100 120 1.2 900kHz – (mV) 80 90 0.9 HG SENSE 60 60 + – V 0.6 LG 40 FREQUENCY (MHz) MINIMUM ON-TIME (ns) V SENSE 30 0.3 220kHz 20 0 0 0 –50 –15 20 55 90 125 –50 –15 20 55 90 125 0 0.75 1.5 2.25 3.0 TEMPERATURE (°C) TEMPERATURE (°C) CTRL_H (V) 3741 G24 3741 G36 3741 G28
Current Regulation Accuracy Current Regulation Accuracy CTRL1 = 1.5V, VIN = 12V CTRL1 = 0.75V, VIN = 12V VOUT vs IOUT
3 6 6 2 4 5 1 2 4 (V) 0 0 3 25°C V OUT ACCURACY (%) 25°C –1 ACCURACY (%) –2 2 –2 –4 1 VIN = 20V VOUT = 5V ILIMIT = 24A –3 –6 0 0 2.5 5.0 7.5 10 0 2.5 5.0 7.5 10 0 2 4 6 8 10 12 14 16 18 20 22 24 26 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) IOUT (A) 3741 G26 3741 G27 3741 G19
VOUT vs IOUT VOUT vs IOUT
25 12 10 20 8 15 (V) (V) 6 V OUT 10 V OUT 4 5 VIN = 25V 2 VIN = 24V VOUT = 20V VOUT = 10V ILIMIT = 9.5A ILIMIT = 18A 0 0 0 1 2 3 4 5 6 7 8 9 10 0 2 4 6 8 10 12 14 16 18 20 IOUT (A) IOUT (A) 3741 G22 3741 G33 37411fg For more information www.linear.com/LT3741 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 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 Minimum On-Time Oscillator Frequency Overcurrent Threshold
150 1.5 120 1.2MHz 100 120 1.2 900kHz – (mV) 80 90 0.9 HG SENSE 60 60 + – V 0.6 LG 40 FREQUENCY (MHz) MINIMUM ON-TIME (ns) V SENSE 30 0.3 220kHz 20 0 0 0 –50 –15 20 55 90 125 –50 –15 20 55 90 125 0 0.75 1.5 2.25 3.0 TEMPERATURE (°C) TEMPERATURE (°C) CTRL_H (V) 3741 G24 3741 G36 3741 G28
Current Regulation Accuracy Current Regulation Accuracy CTRL1 = 1.5V, VIN = 12V CTRL1 = 0.75V, VIN = 12V VOUT vs IOUT
3 6 6 2 4 5 1 2 4 (V) 0 0 3 25°C V OUT ACCURACY (%) 25°C –1 ACCURACY (%) –2 2 –2 –4 1 VIN = 20V VOUT = 5V ILIMIT = 24A –3 –6 0 0 2.5 5.0 7.5 10 0 2.5 5.0 7.5 10 0 2 4 6 8 10 12 14 16 18 20 22 24 26 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) IOUT (A) 3741 G26 3741 G27 3741 G19
VOUT vs IOUT VOUT vs IOUT
25 12 10 20 8 15 (V) (V) 6 V OUT 10 V OUT 4 5 VIN = 25V 2 VIN = 24V VOUT = 20V VOUT = 10V ILIMIT = 9.5A ILIMIT = 18A 0 0 0 1 2 3 4 5 6 7 8 9 10 0 2 4 6 8 10 12 14 16 18 20 IOUT (A) IOUT (A) 3741 G22 3741 G33 37411fg For more information www.linear.com/LT3741 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 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
