Datasheet LT3971A, LT3971A-5 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 38V, 1.3A, 2MHz Step-Down Regulator with 2.2μA Quiescent Current |
| Pages / Page | 24 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 361 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 5V. Efficiency, VOUT = 3.3V
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Text Version of Document
LT3971A/LT3971A-5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 5V Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V
100 100 100 VOUT = 5V 90 VIN = 12V 90 90 R1 = 1M VIN = 12V R2 = 309k 80 80 80 V 70 IN = 12V 70 VIN = 36V 70 60 V VIN = 24V V V IN = 24V IN = 36V IN = 24V V 60 IN = 36V 60 50 50 40 EFFICIENCY (%) 50 EFFICIENCY (%) EFFICIENCY (%) 30 40 40 20 V 30 OUT = 5V R1 = 1M 30 10 R2 = 309k 20 20 0 0 0.2 0.4 0.6 0.8 1 1.2 0 0.2 0.4 0.6 0.8 1 1.2 0.01 0.1 1 10 100 1000 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 3971A G01 3971A G02 3971A G03
Efficiency, VOUT = 3.3V No Load Supply Current No Load Supply Current
90 100 4.0 DIODES, INC. 80 DFLS2100 VIN = 12V 3.5 70 LT3971A 60 V 3.0 IN = 24V VOUT = 3.3V VIN = 36V 50 10 2.5 40 LT3971A-5 EFFICIENCY (%) 30 2.0 INPUT CURRENT (μA) INPUT CURRENT (μA) 20 1.5 10 0 1 1.0 0.01 0.1 1 10 100 1000 –55 –25 5 35 65 95 125 155 5 10 15 20 25 30 35 LOAD CURRENT (mA) TEMPERATURE (°C) INPUT VOLTAGE (V) 3971A G04 3971A G05 3971A G06
LT3971A Feedback Voltage LT3971A-5 Output Voltage Maximum Load Current
1.205 5.06 3.0 VOUT = 3.3V 1.200 5.04 2.5 TYPICAL 1.195 5.02 2.0 TAGE (V) TAGE (V) MINIMUM 1.190 5.00 1.5 1.185 4.98 1.0 LOAD CURRENT (A) FEEDBACK VOL OUTPUT VOL 1.180 4.96 0.5 1.175 4.94 0 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 5 10 15 20 25 30 35 40 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3971A G07 3971A G08 3971A G09 3971af 4 Document Outline FEATURES DESCRIPTION APPLICATIONS 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 TA = 25°C, unless otherwise noted. Efficiency, VOUT = 5V Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V
100 100 100 VOUT = 5V 90 VIN = 12V 90 90 R1 = 1M VIN = 12V R2 = 309k 80 80 80 V 70 IN = 12V 70 VIN = 36V 70 60 V VIN = 24V V V IN = 24V IN = 36V IN = 24V V 60 IN = 36V 60 50 50 40 EFFICIENCY (%) 50 EFFICIENCY (%) EFFICIENCY (%) 30 40 40 20 V 30 OUT = 5V R1 = 1M 30 10 R2 = 309k 20 20 0 0 0.2 0.4 0.6 0.8 1 1.2 0 0.2 0.4 0.6 0.8 1 1.2 0.01 0.1 1 10 100 1000 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 3971A G01 3971A G02 3971A G03
Efficiency, VOUT = 3.3V No Load Supply Current No Load Supply Current
90 100 4.0 DIODES, INC. 80 DFLS2100 VIN = 12V 3.5 70 LT3971A 60 V 3.0 IN = 24V VOUT = 3.3V VIN = 36V 50 10 2.5 40 LT3971A-5 EFFICIENCY (%) 30 2.0 INPUT CURRENT (μA) INPUT CURRENT (μA) 20 1.5 10 0 1 1.0 0.01 0.1 1 10 100 1000 –55 –25 5 35 65 95 125 155 5 10 15 20 25 30 35 LOAD CURRENT (mA) TEMPERATURE (°C) INPUT VOLTAGE (V) 3971A G04 3971A G05 3971A G06
LT3971A Feedback Voltage LT3971A-5 Output Voltage Maximum Load Current
1.205 5.06 3.0 VOUT = 3.3V 1.200 5.04 2.5 TYPICAL 1.195 5.02 2.0 TAGE (V) TAGE (V) MINIMUM 1.190 5.00 1.5 1.185 4.98 1.0 LOAD CURRENT (A) FEEDBACK VOL OUTPUT VOL 1.180 4.96 0.5 1.175 4.94 0 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 5 10 15 20 25 30 35 40 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3971A G07 3971A G08 3971A G09 3971af 4 Document Outline FEATURES DESCRIPTION APPLICATIONS 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
