Datasheet LT8609, LT8609A, LT8609B (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 42V, 2A/3A Peak Synchronous Step-Down Regulator with 2.5µA Quiescent Current |
| Pages / Page | 26 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Load Regulation. Line Regulation. … |
| File Format / Size | PDF / 1.5 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Load Regulation. Line Regulation. No-Load Supply Current. (3.3V Output). vs Temperature
Text Version of Document
LT8609/LT8609A/LT8609B
TYPICAL PERFORMANCE CHARACTERISTICS Load Regulation Line Regulation
0.50 0.20 V I 0.40 IN = 12V LOAD = 1A VOUT = 3.3V 0.15 0.30 0.10 0.20 (%) (%) 0.10 0.05 OUT OUT 0.00 0.00 –0.10 –0.05 CHANGE IN V –0.20 CHANGE IN V –0.10 –0.30 –0.40 –0.15 –0.50 –0.20 0.0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 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 8609fg 6 For more information www.linear.com/LT8609 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
TYPICAL PERFORMANCE CHARACTERISTICS Load Regulation Line Regulation
0.50 0.20 V I 0.40 IN = 12V LOAD = 1A VOUT = 3.3V 0.15 0.30 0.10 0.20 (%) (%) 0.10 0.05 OUT OUT 0.00 0.00 –0.10 –0.05 CHANGE IN V –0.20 CHANGE IN V –0.10 –0.30 –0.40 –0.15 –0.50 –0.20 0.0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 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 8609fg 6 For more information www.linear.com/LT8609 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
