Datasheet LT8630 (Analog Devices) - 5

LT8630
Typical perForMance characTerisTics VIN Undervoltage Lockout Reference Voltage Frequency vs Load Current
2.90 812 800 VIN = 48V V 700 OUT = 12V 810 L = 22µH 2.85 600 808 500 806 2.80 TAGE (V) 400 TAGE (mV) 804 VOL VOL 300 2.75 802 SWITCHING FREQUENCY (KHz) 200 800 100 2.70 798 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (A) 8630 G10 8630 G11 8630 G12
No Load Supply Current No Load Supply Current Sleep Quiescent Currents
60 25 20 VIN = 12V I 18 QVIN IQVOUT 50 20 16 14 40 15 12 30 10 10 8 CURRENT (µA) 20 CURRENT (µA) CURRENT (µA) 6 5 4 10 VOUT = 3.3V VOUT = 3.3V 2 VOUT = 5V VOUT = 5V 0 0 0 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 70 80 90 100 2.5 2.75 3 3.25 3.5 3.75 4 TEMPERATURE (°C) INPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 8630 G13 8630 G14 8630 G15
Peak Switch Current Minimum On-Time Switch Resistance
2.2 200 1.4 LOAD = 500mA 2.1 180 1.2 160 2.0 140 1.0 1.9 120 0.8 1.8 100 ANCE (Ω) TIME (ns) ON-TIME 0.6 CURRENT (A) 1.7 80 RESIST 60 0.4 1.6 40 1.5 0.2 20 TOP SWITCH BOTTOM SWITCH 1.4 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8630 G16 8630 G17 8630 G18 8630f For more information www.linear.com/LT8630 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts