Datasheet LT8611 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 42V, 2.5A Synchronous Step-Down Regulator with Current Sense and 2.5μA Quiescent Current |
| Pages / Page | 26 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency at 5VOUT. Efficiency at … |
| File Format / Size | PDF / 343 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency at 5VOUT. Efficiency at 3.3VOUT. Efficiency vs Frequency. Reference Voltage
Model Line for this Datasheet
Text Version of Document
LT8611
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency at 5VOUT Efficiency at 3.3VOUT Efficiency at 5VOUT
100 100 100 V 95 95 IN = 12V 90 90 90 80 VIN = 24V 85 85 70 80 80 60 75 75 50 70 70 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 65 65 30 60 fSW = 700kHz 60 fSW = 700kHz 20 55 VIN = 12V VIN = 12V V 55 10 IN = 24V VIN = 24V f 50 50 SW = 700MHz 0 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 0.001 0.01 0.1 1 10 100 1000 10000 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 8611 G01 8611 G02 8611 G03
Efficiency at 3.3VOUT Efficiency vs Frequency Reference Voltage
100 96 0.985 VOUT = 3.3V 90 VIN = 12V 0.982 94 80 0.979 VIN = 24V 92 70 0.976 60 90 0.973 50 0.970 88 40 0.967 EFFICIENCY (%) EFFICIENCY (%) 30 86 0.964 REFERENCE VOLTAGE (V) 20 0.961 84 VIN = 12V 10 V 0.958 IN = 24V fSW = 700MHz 0 82 0.955 0.0001 0.001 0.01 0.1 1 10 100 1000 0.25 0.75 1.25 1.75 2.25 –55 –25 5 35 65 95 125 155 LOAD CURRENT (mA) SWITCHING FREQUENCY (MHz) TEMPERATURE (°C) 8611 G04 8611 G05 8611 G06
EN Pin Thresholds Load Regulation Line Regulation
1.04 0.25 0.10 VOUT = 3.3V VOUT = 3.3V 1.03 0.20 V 0.08 IN = 12V ILOAD = 0.5A 1.02 0.15 0.06 1.01 0.10 0.04 (%) (%) EN RISING 0.05 0.02 1.00 OUT OUT 0 0 0.99 –0.05 –0.02 EN THRESHOLD (V) 0.98 CHANGE IN V –0.10 CHANGE IN V –0.04 0.97 EN FALLING –0.15 –0.06 0.96 –0.20 –0.08 0.95 –0.25 –0.10 –55 –25 5 35 65 95 125 155 0 0.5 1 1.5 2 2.5 3 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) LOAD CURRENT (A) INPUT VOLTAGE (V) 8611 G07 8611 G08 8611 G09 8611fa 4 For more information www.linear.com/LT8611 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 Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency at 5VOUT Efficiency at 3.3VOUT Efficiency at 5VOUT
100 100 100 V 95 95 IN = 12V 90 90 90 80 VIN = 24V 85 85 70 80 80 60 75 75 50 70 70 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 65 65 30 60 fSW = 700kHz 60 fSW = 700kHz 20 55 VIN = 12V VIN = 12V V 55 10 IN = 24V VIN = 24V f 50 50 SW = 700MHz 0 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 0.001 0.01 0.1 1 10 100 1000 10000 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 8611 G01 8611 G02 8611 G03
Efficiency at 3.3VOUT Efficiency vs Frequency Reference Voltage
100 96 0.985 VOUT = 3.3V 90 VIN = 12V 0.982 94 80 0.979 VIN = 24V 92 70 0.976 60 90 0.973 50 0.970 88 40 0.967 EFFICIENCY (%) EFFICIENCY (%) 30 86 0.964 REFERENCE VOLTAGE (V) 20 0.961 84 VIN = 12V 10 V 0.958 IN = 24V fSW = 700MHz 0 82 0.955 0.0001 0.001 0.01 0.1 1 10 100 1000 0.25 0.75 1.25 1.75 2.25 –55 –25 5 35 65 95 125 155 LOAD CURRENT (mA) SWITCHING FREQUENCY (MHz) TEMPERATURE (°C) 8611 G04 8611 G05 8611 G06
EN Pin Thresholds Load Regulation Line Regulation
1.04 0.25 0.10 VOUT = 3.3V VOUT = 3.3V 1.03 0.20 V 0.08 IN = 12V ILOAD = 0.5A 1.02 0.15 0.06 1.01 0.10 0.04 (%) (%) EN RISING 0.05 0.02 1.00 OUT OUT 0 0 0.99 –0.05 –0.02 EN THRESHOLD (V) 0.98 CHANGE IN V –0.10 CHANGE IN V –0.04 0.97 EN FALLING –0.15 –0.06 0.96 –0.20 –0.08 0.95 –0.25 –0.10 –55 –25 5 35 65 95 125 155 0 0.5 1 1.5 2 2.5 3 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) LOAD CURRENT (A) INPUT VOLTAGE (V) 8611 G07 8611 G08 8611 G09 8611fa 4 For more information www.linear.com/LT8611 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 Typical Application Related Parts
