Datasheet LTM8042, LTM8042-1 (Analog Devices) - 10

LTM8042/LTM8042-1
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. LTM8042-1 Efficiency vs VIN, Buck Mode, Efficiency vs VIN, Buck-Boost Efficiency vs VIN, Buck-Boost 18.6V at 350mA LED String Mode, 3.7V at 350mA LED String Mode, 6.7V at 350mA LED String
97 90 90 80 85 95 70 80 75 93 60 70 50 91 65 40 60 EFFICIENCY (%) 89 EFFICIENCY (%) 30 EFFICIENCY (%) 55 20 50 87 10 45 85 0 40 21 23 25 27 29 31 33 0 10 20 30 40 0 5 10 15 20 25 30 VIN (V) VIN (V) VIN (V) 80421 G51 80421 G52 80421 G53
Efficiency vs VIN, Buck-Boost Efficiency vs VIN, Buck-Boost Efficiency vs VIN, Buck-Boost Mode, 9.7V at 350mA LED String Mode, 12.6V at 350mA LED String Mode, 15.6V at 350mA LED String
90 90 88 85 86 85 80 84 80 82 75 80 70 75 78 EFFICIENCY (%) 65 EFFICIENCY (%) 70 EFFICIENCY (%) 76 60 74 65 55 72 50 60 70 0 5 10 15 20 25 30 0 5 10 15 20 25 0 10 15 20 VIN (V) VIN (V) VIN (V) 80421 G54 80421 G55 80421 G56
Efficiency vs VIN, Buck-Boost Maximum LED Current vs Input Maximum LED Current vs Input Mode, 18.6V at 350mA LED String Voltage, Boost Operation Voltage, Buck Mode
87 400 400 350 350 85 300 300 83 250 250 81 200 200 150 150 EFFICIENCY (%) 3.2V AT 350mA 79 6.3V AT 350mA 6.3V AT 350mA 100 15.5V AT 350mA 100 9.4V AT 350mA 77 MAXIMUM LED CURRENT (mA) 18.6V AT 350mA MAXIMUM LED CURRENT (mA) 12.4V AT 350mA 50 21.7V AT 350mA 50 15.5V AT 350mA 24.8V AT 350mA 18.6V AT 350mA 75 0 0 5 7 9 11 13 15 0 5 10 15 20 25 0 10 20 30 40 VIN (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 80421 G57 80421 G58 80421 G59 80421fb 10 For more information www.linear.com/LTM8042