Datasheet LT3690 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 36V, 4A, 1.5MHz Synchronous Step-Down Switching Regulator with 70μA Quiescent Current |
| Pages / Page | 30 / 5 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 1.2 Mb |
| Document Language | English |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Efficiency and Power Loss
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LT3690
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Efficiency and Power Loss Efficiency and Power Loss
100 3.0 100 3.0 90 2.5 90 2.5 POWER LOSS (W) POWER LOSS (W) 80 2.0 80 2.0 70 1.5 70 1.5 EFFICIENCY (%) V 60 OUT = 5V 1.0 EFFICIENCY (%) L = 4.7µH 60 VOUT = 3.3V 1.0 ƒ = 600kHz L = 3.3µH ƒ = 500kHz 50 VIN = 12V 0.5 50 V 0.5 V IN = 12V IN = 24V V V IN = 24V IN = 34V V 40 0 40 IN = 34V 0 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) LOAD CURRENT (A) 3690 G01 3690 G02
Efficiency and Power Loss Efficiency and Power Loss No Load Supply Current vs VIN
100 3.0 100 3.0 160 VOUT = 3.3V, L = 3.3µH, ƒ = 600kHz VOUT = 3.3V 90 VIN = 12V 140 90 2.5 V 80 IN = 24V 2.4 VIN = 34V 120 POWER LOSS (W) 70 POWER LOSS (W) 80 2.0 100 60 EFFICIENCY 1.8 70 1.5 50 80 40 1.2 EFFICIENCY (%) 60 60 VOUT = 3.3V 1.0 EFFICIENCY (%) L = 3.3µH 30 INPUT CURRENT (µA) 40 ƒ = 600kHz 20 POWER LOSS 0.6 50 V 0.5 IN = 12V V 20 IN = 24V 10 V 40 IN = 34V 0 0 0 0 0 0.5 1 1.5 2 2.5 3 3.5 0.0001 0.0010 0.0100 0.1000 1.0000 10.0000 0 5 10 15 20 25 30 35 LOAD CURRENT (A) LOAD CURRENT (A) INPUT VOLTAGE (V) 3690 G03 3690 G03a 3690 G04
No Load Supply Current vs Temperature Maximum Load Current vs VIN Maximum Load Current vs VIN
200 7.0 7.0 VIN = 12V VOUT = 5V VOUT = 3.3V VOUT = 3.3V L = 4.7µH L = 4.7µH 6.5 ƒ = 600kHz 6.5 ƒ = 600kHz 150 6.0 6.0 TYPICAL 5.5 TYPICAL 5.5 100 Y CURRENT (µA) 5.0 5.0 LOAD CURRENT (A) MINIMUM LOAD CURRENT (A) MINIMUM SUPPL 50 4.5 4.5 4.0 4.0 0 3.5 3.5 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 5 10 15 20 25 30 35 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3690 G05 3690 G06 3690 G07 3690fb For more information www.linear.com/LT3690 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
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Efficiency and Power Loss Efficiency and Power Loss
100 3.0 100 3.0 90 2.5 90 2.5 POWER LOSS (W) POWER LOSS (W) 80 2.0 80 2.0 70 1.5 70 1.5 EFFICIENCY (%) V 60 OUT = 5V 1.0 EFFICIENCY (%) L = 4.7µH 60 VOUT = 3.3V 1.0 ƒ = 600kHz L = 3.3µH ƒ = 500kHz 50 VIN = 12V 0.5 50 V 0.5 V IN = 12V IN = 24V V V IN = 24V IN = 34V V 40 0 40 IN = 34V 0 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) LOAD CURRENT (A) 3690 G01 3690 G02
Efficiency and Power Loss Efficiency and Power Loss No Load Supply Current vs VIN
100 3.0 100 3.0 160 VOUT = 3.3V, L = 3.3µH, ƒ = 600kHz VOUT = 3.3V 90 VIN = 12V 140 90 2.5 V 80 IN = 24V 2.4 VIN = 34V 120 POWER LOSS (W) 70 POWER LOSS (W) 80 2.0 100 60 EFFICIENCY 1.8 70 1.5 50 80 40 1.2 EFFICIENCY (%) 60 60 VOUT = 3.3V 1.0 EFFICIENCY (%) L = 3.3µH 30 INPUT CURRENT (µA) 40 ƒ = 600kHz 20 POWER LOSS 0.6 50 V 0.5 IN = 12V V 20 IN = 24V 10 V 40 IN = 34V 0 0 0 0 0 0.5 1 1.5 2 2.5 3 3.5 0.0001 0.0010 0.0100 0.1000 1.0000 10.0000 0 5 10 15 20 25 30 35 LOAD CURRENT (A) LOAD CURRENT (A) INPUT VOLTAGE (V) 3690 G03 3690 G03a 3690 G04
No Load Supply Current vs Temperature Maximum Load Current vs VIN Maximum Load Current vs VIN
200 7.0 7.0 VIN = 12V VOUT = 5V VOUT = 3.3V VOUT = 3.3V L = 4.7µH L = 4.7µH 6.5 ƒ = 600kHz 6.5 ƒ = 600kHz 150 6.0 6.0 TYPICAL 5.5 TYPICAL 5.5 100 Y CURRENT (µA) 5.0 5.0 LOAD CURRENT (A) MINIMUM LOAD CURRENT (A) MINIMUM SUPPL 50 4.5 4.5 4.0 4.0 0 3.5 3.5 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 5 10 15 20 25 30 35 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3690 G05 3690 G06 3690 G07 3690fb For more information www.linear.com/LT3690 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
