Datasheet LT8609, LT8609A, LT8609B (Analog Devices) - 7

LT8609/LT8609A/LT8609B
TYPICAL PERFORMANCE CHARACTERISTICS LT8609A-3.3 VOUT Voltage LT8609A-5 VOUT Voltage Load Regulation
3.310 5.02 0.500 0.400 3.305 5.01 0.300 3.300 0.200 TAGE (V) TAGE (V) 5.00 (%) 3.295 0.100 OUT 3.290 4.99 0.000 TION VOL TION VOL –0.100 3.285 4.98 REGULA REGULA CHANGE IN V –0.200 3.280 –0.300 V OUT V OUT 4.97 3.275 –0.400 3.270 4.96 –0.500 –50 –10 30 70 110 150 –50 –10 30 70 110 150 0.0 0.5 1.0 1.5 2.0 2.5 3.0 TEMPERATURE (°C) TEMPERATURE (°C) OUTPUT CURRENT (A) 8609 G40 8609 G41 8609 G10
No-Load Supply Current Tested in No-Load Supply Current Line Regulation Regulation vs Temperature (N ot Switching)
0.20 5.00 3.3 ILOAD = 1A L = 2.2µH VIN = 12V 0.15 3.1 4.50 2.9 0.10 4.00 2.7 (%) 0.05 OUT 3.50 2.5 0.00 (µA) LT8609 (V 2.3 OUT = 3.3V) I IN 3.00 LT8609A-3.3 –0.05 2.1 LT8609A-5 CHANGE IN V 2.50 1.9 –0.10 INPUT CURRENT (µA) 1.7 2.00 –0.15 1.5 –0.20 1.50 1.3 4.0 11.6 19.2 26.8 34.4 42.0 2 10 18 26 34 42 –50 –10 30 70 110 150 INPUT VOLTAGE (V) INPUT VOLTAGE (V) TEMPERATURE (°C) 8609 G11 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. I For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts