Datasheet LT3748 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 100V Isolated Flyback Controller |
| Pages / Page | 34 / 4 — typical perForMance characteristics TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 542 Kb |
| Document Language | English |
typical perForMance characteristics TA = 25°C, unless otherwise noted. Output Regulation vs Temperature
Model Line for this Datasheet
Text Version of Document
LT3748
typical perForMance characteristics TA = 25°C, unless otherwise noted. Output Regulation vs Temperature Quiescent Current vs Temperature Quiescent Current vs VIN Voltage
15.6 1.7 1.6 FIGURE 16 CIRCUIT VSS = 0V VSS = 0V IOUT = 150mA ON EACH OUTPUT 1.6 INTVCC = OPEN 1.4 INTVCC = OPEN 15.4 VIN = 12V 1.5 VIN = 72V 1.2 15.2 1.4 V 1.0 IN = 36V (V) 1.3 15.0 0.8 V V OUT 1.2 IN = 12V 0.6 14.8 1.1 VIN = 6V QUIESCENT CURRENT (mA) 1.0 QUIESCENT CURRENT (mA) 0.4 14.6 0.9 0.2 14.4 0.8 0 –55 –25 0 25 50 75 100 125 150 –55 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3748 G01 3748 G02 3748 G03
INTVCC Undervoltage Lockout INTVCC Voltage vs Temperature INTVCC Voltage vs VIN Voltage vs Temperature
7.5 7.5 4.0 I 7.4 INTVCC = 0mA 7.0 3.9 7.3 IINTVCC = 10mA 7.2 6.5 3.8 7.1 IINTVCC = 0mA (V) 6.0 3.7 RISING THRESHOLD 7.0 UVLO (V) VOLTAGE (V) 5.5 CC 3.6 CC 6.9 I V INTVCC INTVCC = 10mA FALLING THRESHOLD INTV INTV 6.8 5.0 3.5 6.7 4.5 3.4 6.6 6.5 4.0 3.3 –55 –25 0 25 50 75 100 125 150 4 6 8 10 20 40 60 80 100 –55 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VIN VOLTAGE (V) TEMPERATURE (°C) 3748 G04 3748 G05 3748 G06
INTVCC Regulator Dropout vs INTVCC Current INTVCC Dropout vs Temperature Soft-Start Current vs Temperature
3.0 6 V 3.0 IN = 5V VIN = 5V 2.5 2.5 5 2.0 2.0 4 IINTVCC = 20mA TOR DROPOUT (V) 1.5 1.5 3 DROPOUT (V) CC IINTVCC = 10mA 2 REGULA 1.0 1.0 INTV V CC 150°C SOFT-START CURRENT (µA) INT 0.5 100°C 0.5 1 25°C I –50°C INTVCC = 5mA 0 0 0 0 10 20 30 40 –55 –25 0 25 50 75 100 125 150 –55 –25 0 25 50 75 100 125 150 INTVCC CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3748 G07 3748 G08 3748 G09 3748fb 4 For more information www.linear.com/LT3748 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions block diagram Operation Applications Information Package Description Typical Application Related Parts
typical perForMance characteristics TA = 25°C, unless otherwise noted. Output Regulation vs Temperature Quiescent Current vs Temperature Quiescent Current vs VIN Voltage
15.6 1.7 1.6 FIGURE 16 CIRCUIT VSS = 0V VSS = 0V IOUT = 150mA ON EACH OUTPUT 1.6 INTVCC = OPEN 1.4 INTVCC = OPEN 15.4 VIN = 12V 1.5 VIN = 72V 1.2 15.2 1.4 V 1.0 IN = 36V (V) 1.3 15.0 0.8 V V OUT 1.2 IN = 12V 0.6 14.8 1.1 VIN = 6V QUIESCENT CURRENT (mA) 1.0 QUIESCENT CURRENT (mA) 0.4 14.6 0.9 0.2 14.4 0.8 0 –55 –25 0 25 50 75 100 125 150 –55 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3748 G01 3748 G02 3748 G03
INTVCC Undervoltage Lockout INTVCC Voltage vs Temperature INTVCC Voltage vs VIN Voltage vs Temperature
7.5 7.5 4.0 I 7.4 INTVCC = 0mA 7.0 3.9 7.3 IINTVCC = 10mA 7.2 6.5 3.8 7.1 IINTVCC = 0mA (V) 6.0 3.7 RISING THRESHOLD 7.0 UVLO (V) VOLTAGE (V) 5.5 CC 3.6 CC 6.9 I V INTVCC INTVCC = 10mA FALLING THRESHOLD INTV INTV 6.8 5.0 3.5 6.7 4.5 3.4 6.6 6.5 4.0 3.3 –55 –25 0 25 50 75 100 125 150 4 6 8 10 20 40 60 80 100 –55 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VIN VOLTAGE (V) TEMPERATURE (°C) 3748 G04 3748 G05 3748 G06
INTVCC Regulator Dropout vs INTVCC Current INTVCC Dropout vs Temperature Soft-Start Current vs Temperature
3.0 6 V 3.0 IN = 5V VIN = 5V 2.5 2.5 5 2.0 2.0 4 IINTVCC = 20mA TOR DROPOUT (V) 1.5 1.5 3 DROPOUT (V) CC IINTVCC = 10mA 2 REGULA 1.0 1.0 INTV V CC 150°C SOFT-START CURRENT (µA) INT 0.5 100°C 0.5 1 25°C I –50°C INTVCC = 5mA 0 0 0 0 10 20 30 40 –55 –25 0 25 50 75 100 125 150 –55 –25 0 25 50 75 100 125 150 INTVCC CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3748 G07 3748 G08 3748 G09 3748fb 4 For more information www.linear.com/LT3748 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions block diagram Operation Applications Information Package Description Typical Application Related Parts
