Datasheet LT3973, LT3973-3.3, LT3973-5 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 42V, 750mA Step-Down Regulator with 2.5μA Quiescent Current and Integrated Diodes |
| Pages / Page | 24 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 479 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 3.3V. Efficiency, V. OUT = 3.3V
Model Line for this Datasheet
- LT3973EDD#PBF LT3973EDD#TRPBF LT3973EDD-3.3#PBF LT3973EDD-3.3#TRPBF LT3973EDD-5#PBF LT3973EDD-5#TRPBF LT3973EMSE#PBF LT3973EMSE#TRPBF LT3973EMSE-3.3#PBF LT3973EMSE-3.3#TRPBF LT3973EMSE-5#PBF LT3973EMSE-5#TRPBF LT3973HDD#PBF LT3973HDD#TRPBF LT3973HDD-3.3#PBF LT3973HDD-3.3#TRPBF LT3973HDD-5#PBF LT3973HDD-5#TRPBF LT3973HMSE#PBF LT3973HMSE#TRPBF LT3973HMSE-3.3#PBF LT3973HMSE-3.3#TRPBF LT3973HMSE-5#PBF LT3973HMSE-5#TRPBF LT3973IDD#PBF LT3973IDD#TRPBF LT3973IDD-3.3#PBF LT3973IDD-3.3#TRPBF LT3973IDD-5#PBF LT3973IDD-5#TRPBF LT3973IMSE#PBF LT3973IMSE#TRPBF LT3973IMSE-3.3#PBF LT3973IMSE-3.3#TRPBF LT3973IMSE-5#PBF LT3973IMSE-5#TRPBF
Text Version of Document
LT3973/LT3973-3.3/LT3973-5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 3.3V Efficiency, V Efficiency, V OUT = 3.3V OUT = 5V
90 90 90 V V IN = 12V IN = 12V 80 80 80 VIN = 12V 70 VIN = 24V VIN = 36V 70 V 70 IN = 24V VIN = 36V 60 60 VIN = 24V V 60 IN = 36V 50 50 EFFICIENCY (%) EFFICIENCY (%) 50 EFFICIENCY (%) 40 40 FRONT PAGE APPLICATION FRONT PAGE APPLICATION 30 VOUT = 3.3V 40 30 VOUT = 3.3V R1 = 1M R1 = 1M R2 = 576k FRONT PAGE APPLICATION R2 = 576k 20 30 20 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.01 0.1 1 10 100 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 3973 G01 3973 G02 3973 G03
Efficiency, VOUT = 5V LT3973 Feedback Voltage LT3973-3.3 Output Voltage
90 1.220 3.32 VIN = 12V 80 1.215 3.31 70 1.210 3.30 VIN = 24V V 60 IN = 36V 1.205 3.29 EFFICIENCY (%) 50 FEEDBACK VOLTAGE (V) OUTPUT VOLTAGE (V) 40 1.200 3.28 FRONT PAGE APPLICATION 30 1.195 3.27 0.01 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3973 G04 3973 G05 3973 G06
LT3973-5 Output Voltage No-Load Supply Current No-Load Supply Current
5.04 4.0 35 FRONT PAGE APPLICATION FRONT PAGE APPLICATION VOUT = 3.3V 30 VIN = 12V 5.02 V 3.5 R1 = 1M OUT = 3.3V R2 = 576k R1 = 1M LT3973-3.3 25 R2 = 576k 5.00 3.0 20 4.98 15 2.5 OUTPUT VOLTAGE (V) SUPPLY CURRENT (µA) SUPPLY CURRENT (µA) 10 4.96 2.0 5 4.94 1.5 0 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3973 G07 3973 G08 3973 G09 3973fb For more information www.linear.com/LT3973 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, VOUT = 3.3V Efficiency, V Efficiency, V OUT = 3.3V OUT = 5V
90 90 90 V V IN = 12V IN = 12V 80 80 80 VIN = 12V 70 VIN = 24V VIN = 36V 70 V 70 IN = 24V VIN = 36V 60 60 VIN = 24V V 60 IN = 36V 50 50 EFFICIENCY (%) EFFICIENCY (%) 50 EFFICIENCY (%) 40 40 FRONT PAGE APPLICATION FRONT PAGE APPLICATION 30 VOUT = 3.3V 40 30 VOUT = 3.3V R1 = 1M R1 = 1M R2 = 576k FRONT PAGE APPLICATION R2 = 576k 20 30 20 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.01 0.1 1 10 100 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 3973 G01 3973 G02 3973 G03
Efficiency, VOUT = 5V LT3973 Feedback Voltage LT3973-3.3 Output Voltage
90 1.220 3.32 VIN = 12V 80 1.215 3.31 70 1.210 3.30 VIN = 24V V 60 IN = 36V 1.205 3.29 EFFICIENCY (%) 50 FEEDBACK VOLTAGE (V) OUTPUT VOLTAGE (V) 40 1.200 3.28 FRONT PAGE APPLICATION 30 1.195 3.27 0.01 0.1 1 10 100 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 LOAD CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3973 G04 3973 G05 3973 G06
LT3973-5 Output Voltage No-Load Supply Current No-Load Supply Current
5.04 4.0 35 FRONT PAGE APPLICATION FRONT PAGE APPLICATION VOUT = 3.3V 30 VIN = 12V 5.02 V 3.5 R1 = 1M OUT = 3.3V R2 = 576k R1 = 1M LT3973-3.3 25 R2 = 576k 5.00 3.0 20 4.98 15 2.5 OUTPUT VOLTAGE (V) SUPPLY CURRENT (µA) SUPPLY CURRENT (µA) 10 4.96 2.0 5 4.94 1.5 0 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3973 G07 3973 G08 3973 G09 3973fb For more information www.linear.com/LT3973 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
