Datasheet LT3992 (Analog Devices) - 7

LT3992
Typical perForMance characTerisTics CLKOUT Frequency vs RT/SYNC Resistance 5V Efficiency 3.3V Efficiency
2500 90 90 VIN = 12V 2250 85 85 2000 VIN = 24V VIN = 12V 80 80 1750 75 V V 1500 IN = 36V 75 IN = 24V 1250 70 70 1000 EFFICIENCY (%) 65 EFFICIENCY (%) 65 750 CLKOUT FREQUENCY (kHz) 60 60 500 fSW = 1MHz fSW = 1MHz 250 55 CH1 = 5V 55 CH1 = 5V, 0A CH2 = 3.3V, 0A CH2 = 3.3V 0 50 50 0 10 20 30 40 50 60 70 80 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 RT/SYNC RESISTANCE (kΩ) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 3992 G19 3992 G20 3992 G21
5V Efficiency 3.3V Efficiency
90 90 85 85 80 80 75 75 70 70 65 65 60 60 EFFICIENCY (%) EFFICIENCY (%) 55 VIN = 12V 55 V 50 IN = 24V VIN = 12V f V 50 SW = 500kHz IN = 36V fSW = 500kHz VIN = 24V 45 CH1 = 5V VIN = 48V 45 CH1 = 5V, 0A VIN = 36V CH2 = 3.3V, 0A VIN = 60V CH2 = 3.3V VIN = 48V 40 40 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 OUTPUT CURRENT (A) OUTPUT CURRENT (A) 3992 G22 3992 G23 3992fa For more information www.linear.com/LT3992 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Typical Application Related Parts