Datasheet LT8609, LT8609A, LT8609B (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 42V, 3A Synchronous Step-Down Regulator with 2.5µA Quiescent Current |
| Pages / Page | 26 / 6 — Load Regulation. Line Regulation. No-Load Supply Current. (3.3V Output). … |
| Revision | H |
| File Format / Size | PDF / 327 Kb |
| Document Language | English |
Load Regulation. Line Regulation. No-Load Supply Current. (3.3V Output). vs Temperature. No Load Supply Current Vs Temperature
Text Version of Document
LT8609/LT8609A/LT8609B TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation Line Regulation
0.500 0.20 I 0.400 LOAD = 1A 0.15 0.300 0.10 0.200 (%) (%) 0.100 0.05 OUT OUT 0.000 0.00 –0.100 –0.05 CHANGE IN V –0.200 CHANGE IN V –0.10 –0.300 –0.400 –0.15 –0.500 –0.20 0.0 0.5 1.0 1.5 2.0 2.5 3.0 4.0 11.6 19.2 26.8 34.4 42.0 OUTPUT CURRENT (A) INPUT VOLTAGE (V) 8609 G10 8609 G11
No-Load Supply Current No-Load Supply Current (3.3V Output) vs Temperature No Load Supply Current Vs Temperature
5.0 3.3 V 4.5 3.1 IN = 12V VOUT = 3.3V 4.0 2.9 3.5 2.7 3.0 2.5 (µA) 2.5 2.3 I IN 2.0 2.1 1.5 1.9 INPUT CURRENT (µA) 1.0 1.7 0.5 1.5 0.0 1.3 0 10 20 30 40 50 –50 –10 30 70 110 150 VIN (V) TEMPERATURE (°C) 8609 G12 8609 G13
Top FET Current Limit Top FET Current Limit vs Duty Cycle Top Fet Current Limit vs Duty Cycle vs Temperature
5.50 5.0 5.25 4.9 5.00 4.8 4.75 4.7 4.50 (A) 4.6 I SW 4.25 4.5 4.00 4.4 TOP FET CURRENT LIMIT (A) 3.75 4.3 3.50 4.2 0 20 40 60 80 100 –50 –10 30 70 110 150 DUTY CYCLE (%) TEMPERATURE (°C) 8609 G14 8609 G15 Rev. H 6 For more information www.analog.com Document Outline Features Applications Typical Application Description 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
Load Regulation Line Regulation
0.500 0.20 I 0.400 LOAD = 1A 0.15 0.300 0.10 0.200 (%) (%) 0.100 0.05 OUT OUT 0.000 0.00 –0.100 –0.05 CHANGE IN V –0.200 CHANGE IN V –0.10 –0.300 –0.400 –0.15 –0.500 –0.20 0.0 0.5 1.0 1.5 2.0 2.5 3.0 4.0 11.6 19.2 26.8 34.4 42.0 OUTPUT CURRENT (A) INPUT VOLTAGE (V) 8609 G10 8609 G11
No-Load Supply Current No-Load Supply Current (3.3V Output) vs Temperature No Load Supply Current Vs Temperature
5.0 3.3 V 4.5 3.1 IN = 12V VOUT = 3.3V 4.0 2.9 3.5 2.7 3.0 2.5 (µA) 2.5 2.3 I IN 2.0 2.1 1.5 1.9 INPUT CURRENT (µA) 1.0 1.7 0.5 1.5 0.0 1.3 0 10 20 30 40 50 –50 –10 30 70 110 150 VIN (V) TEMPERATURE (°C) 8609 G12 8609 G13
Top FET Current Limit Top FET Current Limit vs Duty Cycle Top Fet Current Limit vs Duty Cycle vs Temperature
5.50 5.0 5.25 4.9 5.00 4.8 4.75 4.7 4.50 (A) 4.6 I SW 4.25 4.5 4.00 4.4 TOP FET CURRENT LIMIT (A) 3.75 4.3 3.50 4.2 0 20 40 60 80 100 –50 –10 30 70 110 150 DUTY CYCLE (%) TEMPERATURE (°C) 8609 G14 8609 G15 Rev. H 6 For more information www.analog.com Document Outline Features Applications Typical Application Description 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
