Datasheet LT3667 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 40V 400mA Step-Down Switching Regulator with Dual Fault Protected LDOs |
| Pages / Page | 34 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 446 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 3.3V. Efficiency, VOUT = 5V
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LT3667
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V VFB1/2/3 vs Temperature
90 90 1.30 816 80 80 VIN1 = 12V VIN1 = 12V 70 70 1.25 808 VIN1 = 24V VIN1 = 24V 60 60 V V VIN1 = 36V FB2/3 50 IN1 = 36V 50 (V) 1.20 800 (mV) 40 40 V FB1 EFFICIENCY (%) 30 EFFICIENCY (%) 30 1.15 792 20 FRONT PAGE APPLICATION 20 FRONT PAGE APPLICATION BUCK REGULATOR ONLY BUCK REGULATOR ONLY VFB1 10 V 10 V V OUT1 = 3.3V OUT1 = 5V FB2 L: MSS7341-223MLB L: MSS7341-223MLB VFB3 0 0 1.10 784 0.01 0.1 1 10 100 0.01 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3667 G01 3667 G02 3667 G03
No-Load Supply Current No-Load Supply Current Maximum Load Current
100 700 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION 90 CATCH DIODE: CMMSH1-60 VOUT1 = 3.3V 80 650 1m 70 INCREASED SUPPLY CURRENT 600 TYPICAL 60 DUE TO CATCH DIODE LEAKAGE 50 AT HIGH TEMPERATURE 550 40 100µ 30 500 SUPPLY CURRENT (µA) SUPPLY CURRENT (A) LOAD CURRENT (mA) MINIMUM 20 450 10 0 10µ 400 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 40 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3667 G04 3667 G05 3667 G06
Switching Regulator Maximum Load Current Load Regulation Switch Current Limit
700 0.10 800 FRONT PAGE APPLICATION FRONT PAGE APPLICATION V 0.08 OUT1 = 5V REFERENCED FROM VOUT1 AT 200mA LOAD SWITCH PEAK 650 0.06 CURRENT LIMIT 700 0.04 600 0.02 TYPICAL 550 0 600 –0.02 500 LOAD CURRENT (mA) –0.04 CATCH DIODE VALLEY CURRENT LIMIT LOAD REGULATION (%) 500 –0.06 450 MINIMUM SWITCH CURRENT LIMIT (mA) –0.08 400 –0.10 400 5 10 15 20 25 30 35 40 0 50 100 150 200 250 300 350 400 0 20 40 60 80 100 INPUT VOLTAGE (V) LOAD CURRENT (mA) DUTY CYCLE (%) 3667 G07 3667 G08 3667 G09 3667fb 6 For more information www.linear.com/LT3667 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V VFB1/2/3 vs Temperature
90 90 1.30 816 80 80 VIN1 = 12V VIN1 = 12V 70 70 1.25 808 VIN1 = 24V VIN1 = 24V 60 60 V V VIN1 = 36V FB2/3 50 IN1 = 36V 50 (V) 1.20 800 (mV) 40 40 V FB1 EFFICIENCY (%) 30 EFFICIENCY (%) 30 1.15 792 20 FRONT PAGE APPLICATION 20 FRONT PAGE APPLICATION BUCK REGULATOR ONLY BUCK REGULATOR ONLY VFB1 10 V 10 V V OUT1 = 3.3V OUT1 = 5V FB2 L: MSS7341-223MLB L: MSS7341-223MLB VFB3 0 0 1.10 784 0.01 0.1 1 10 100 0.01 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) LOAD CURRENT (mA) TEMPERATURE (°C) 3667 G01 3667 G02 3667 G03
No-Load Supply Current No-Load Supply Current Maximum Load Current
100 700 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION 90 CATCH DIODE: CMMSH1-60 VOUT1 = 3.3V 80 650 1m 70 INCREASED SUPPLY CURRENT 600 TYPICAL 60 DUE TO CATCH DIODE LEAKAGE 50 AT HIGH TEMPERATURE 550 40 100µ 30 500 SUPPLY CURRENT (µA) SUPPLY CURRENT (A) LOAD CURRENT (mA) MINIMUM 20 450 10 0 10µ 400 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 40 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3667 G04 3667 G05 3667 G06
Switching Regulator Maximum Load Current Load Regulation Switch Current Limit
700 0.10 800 FRONT PAGE APPLICATION FRONT PAGE APPLICATION V 0.08 OUT1 = 5V REFERENCED FROM VOUT1 AT 200mA LOAD SWITCH PEAK 650 0.06 CURRENT LIMIT 700 0.04 600 0.02 TYPICAL 550 0 600 –0.02 500 LOAD CURRENT (mA) –0.04 CATCH DIODE VALLEY CURRENT LIMIT LOAD REGULATION (%) 500 –0.06 450 MINIMUM SWITCH CURRENT LIMIT (mA) –0.08 400 –0.10 400 5 10 15 20 25 30 35 40 0 50 100 150 200 250 300 350 400 0 20 40 60 80 100 INPUT VOLTAGE (V) LOAD CURRENT (mA) DUTY CYCLE (%) 3667 G07 3667 G08 3667 G09 3667fb 6 For more information www.linear.com/LT3667 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Revision History Typical Application Related Parts
