Datasheet LTC3803 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT |
| Pages / Page | 16 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. VCC Undervoltage Lockout. VCC Shunt … |
| File Format / Size | PDF / 173 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. VCC Undervoltage Lockout. VCC Shunt Regulator Voltage. ICC Supply Current
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LTC3803
TYPICAL PERFORMANCE CHARACTERISTICS VCC Undervoltage Lockout VCC Shunt Regulator Voltage ICC Supply Current Thresholds vs Temperature vs Temperature vs Temperature
9.0 10.0 350 VCC = 8V 8.5 V 9.9 TURNON VITH/RUN = 1.3V 325 8.0 9.8 7.5 9.7 300 7.0 9.6 ICC = 25mA 6.5 (V) 9.5 275 CCV 6.0 VTURNOFF 9.4 ICC = 1mA 250 5.5 9.3 SUPPLY CURRENT (μA) UNDERVOLTAGE LOCKOUT (V) 5.0 9.2 CC 225 V 4.5 9.1 4.0 9.0 200 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3803 G07 3803 G08 3803 G09
Start-Up ICC Supply Current ITH/RUN Shutdown Threshold ITH/RUN Start-Up Current Source vs Temperature vs Temperature vs Temperature
90 450 800 VCC = VTURNON – 0.1V VCC = VTURNON + 0.1V 80 V 400 700 ITH/RUN = 0V 70 600 350 60 500 50 300 400 40 250 300 30 200 200 20 SHUTDOWN THRESHOLD (mV) /RUN PIN CURRENT SOURCE (nA) START-UP SUPPLY CURRENT (μA) 150 10 I TH 100 0 100 0 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3803 G10 3803 G11 3803 G12
Peak Current Sense Voltage vs Temperature Soft-Start Time vs Temperature
120 4.0 VCC = 8V 115 3.5 110 3.0 105 2.5 100 2.0 95 1.5 SOFT-START TIME (ms) SENSE PIN VOLTAGE (mV) 90 1.0 85 0.5 80 0 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) 3803 G13 3803 G14 3803fc 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 REVISION HISTORY TYPICAL APPLICATIONS RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS VCC Undervoltage Lockout VCC Shunt Regulator Voltage ICC Supply Current Thresholds vs Temperature vs Temperature vs Temperature
9.0 10.0 350 VCC = 8V 8.5 V 9.9 TURNON VITH/RUN = 1.3V 325 8.0 9.8 7.5 9.7 300 7.0 9.6 ICC = 25mA 6.5 (V) 9.5 275 CCV 6.0 VTURNOFF 9.4 ICC = 1mA 250 5.5 9.3 SUPPLY CURRENT (μA) UNDERVOLTAGE LOCKOUT (V) 5.0 9.2 CC 225 V 4.5 9.1 4.0 9.0 200 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3803 G07 3803 G08 3803 G09
Start-Up ICC Supply Current ITH/RUN Shutdown Threshold ITH/RUN Start-Up Current Source vs Temperature vs Temperature vs Temperature
90 450 800 VCC = VTURNON – 0.1V VCC = VTURNON + 0.1V 80 V 400 700 ITH/RUN = 0V 70 600 350 60 500 50 300 400 40 250 300 30 200 200 20 SHUTDOWN THRESHOLD (mV) /RUN PIN CURRENT SOURCE (nA) START-UP SUPPLY CURRENT (μA) 150 10 I TH 100 0 100 0 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3803 G10 3803 G11 3803 G12
Peak Current Sense Voltage vs Temperature Soft-Start Time vs Temperature
120 4.0 VCC = 8V 115 3.5 110 3.0 105 2.5 100 2.0 95 1.5 SOFT-START TIME (ms) SENSE PIN VOLTAGE (mV) 90 1.0 85 0.5 80 0 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) 3803 G13 3803 G14 3803fc 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 REVISION HISTORY TYPICAL APPLICATIONS RELATED PARTS
