Datasheet LT1737 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | High Power Isolated Flyback Controller |
| Pages / Page | 28 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS. Minimum Input Voltage vs. Shutdown … |
| File Format / Size | PDF / 386 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Minimum Input Voltage vs. Shutdown Voltage (VUVLO) vs. Temperature
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LT1737
W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Input Voltage vs Shutdown Voltage (VUVLO) vs Temperature Shutdown ICC vs Temperature Temperature
4.3 125 1.0 0.9 4.2 100 (V) UVLO µA) 0.8 ( 4.1 CC 75 0.7 4.0 50 0.6 SHUTDOWN I MINIMUM INPUT VOLTAGE (V) 3.9 25 SHUTDOWN VOLTAGE V 0.5 3.8 0 0.4 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1737 G01 1737 G02 1737 G03
UVLO Pin Input Current vs Oscillator Frequency vs Supply Current vs Temperature Temperature Temperature
13 1 115 VUVLO = 1.2V 0 110 12 µA) –1 105 11 –2 V 100 UVLO = 1.3V –3 10 95 –4 SUPPLY CURRENT (mA) 9 UVLO PIN INPUT CURRENT ( OSCILLATOR FREQUENCY (kHz) –5 90 8 –6 85 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1737 G04 1737 G05 1737 G06
VC Clamp Voltage, Switching VGATE vs ISINK VCC-VGATE vs ISOURCE Threshold vs Temperature
1.0 0 3.0 –0.5 2.5 CLAMP VOLTAGE 0.8 TA = 125°C –1.0 2.0 0.6 (V) T (V) A = 125°C TA = 25°C GATE –1.5 T 1.5 A = 25°C GATE -V V 0.4 CCV–2.0 1.0 T SWITCHING THRESHOLD A = –55°C 0.2 TA = –55°C –2.5 0.5 CLAMP VOLTAGE, SWITCHING THRESHOLD (V) 0 –3.0 CV 0 1 10 100 1000 1 10 100 1000 –50 –25 0 25 50 75 100 125 ISINK (mA) ISOURCE (mA) TEMPERATURE (°C) 1737 G07 1737 G08 1737 G09 1737fa 4
W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Input Voltage vs Shutdown Voltage (VUVLO) vs Temperature Shutdown ICC vs Temperature Temperature
4.3 125 1.0 0.9 4.2 100 (V) UVLO µA) 0.8 ( 4.1 CC 75 0.7 4.0 50 0.6 SHUTDOWN I MINIMUM INPUT VOLTAGE (V) 3.9 25 SHUTDOWN VOLTAGE V 0.5 3.8 0 0.4 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1737 G01 1737 G02 1737 G03
UVLO Pin Input Current vs Oscillator Frequency vs Supply Current vs Temperature Temperature Temperature
13 1 115 VUVLO = 1.2V 0 110 12 µA) –1 105 11 –2 V 100 UVLO = 1.3V –3 10 95 –4 SUPPLY CURRENT (mA) 9 UVLO PIN INPUT CURRENT ( OSCILLATOR FREQUENCY (kHz) –5 90 8 –6 85 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1737 G04 1737 G05 1737 G06
VC Clamp Voltage, Switching VGATE vs ISINK VCC-VGATE vs ISOURCE Threshold vs Temperature
1.0 0 3.0 –0.5 2.5 CLAMP VOLTAGE 0.8 TA = 125°C –1.0 2.0 0.6 (V) T (V) A = 125°C TA = 25°C GATE –1.5 T 1.5 A = 25°C GATE -V V 0.4 CCV–2.0 1.0 T SWITCHING THRESHOLD A = –55°C 0.2 TA = –55°C –2.5 0.5 CLAMP VOLTAGE, SWITCHING THRESHOLD (V) 0 –3.0 CV 0 1 10 100 1000 1 10 100 1000 –50 –25 0 25 50 75 100 125 ISINK (mA) ISOURCE (mA) TEMPERATURE (°C) 1737 G07 1737 G08 1737 G09 1737fa 4
