Datasheet LTC3803-5 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT |
| 页数 / 页 | 16 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. VCC Undervoltage Lockout. VCC Shunt … |
| 文件格式/大小 | PDF / 171 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. VCC Undervoltage Lockout. VCC Shunt Regulator Voltage. ICC Supply Current
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LTC3803-5
TYPICAL PERFORMANCE CHARACTERISTICS VCC Undervoltage Lockout VCC Shunt Regulator Voltage ICC Supply Current Thresholds vs Temperature vs Temperature vs Temperature
6.0 10.5 300 VCC = 5V VITH/RUN = 1.3V 5.5 10.0 280 9.5 5.0 VTURNON 260 9.0 4.5 (V) ICC = 25mA VOLTS CCV 8.5 240 4.0 V 8.0 TURNOFF SUPPLY CURRENT (μA) ICC = 1mA 220 3.5 7.5 3.0 7.0 200 –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) 38035 G07 38035 G08 38035 G09
Start-Up ICC Supply Current ITH/RUN Shutdown Threshold ITH/RUN Start-Up Current Source vs Temperature vs Temperature vs Temperature
70 500 1000 VCC = VTURNON – 0.1V VCC = VTURNON + 0.1V 450 900 VITH/RUN = 0V 60 400 800 50 350 700 300 600 40 250 500 30 200 400 20 150 300 SHUTDOWN THRESHOLD (mV) 100 /RUN PIN CURRENT SOURCE (nA) 200 START-UP SUPPLY CURRENT (μA) 10 50 I TH 100 0 0 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) 38035 G11 38035 G10 38035 G12
Peak Current Sense Voltage vs Temperature Soft-Start Time vs Temperature
120 1.4 VCC = 5V VCC = 5V 115 1.2 110 1.0 105 0.8 100 0.6 95 SOFT-START TIME (ms) 0.4 SENSE PIN VOLTAGE (mV) 90 85 0.2 80 0 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) 38035 G13 38035 G14 38035fd 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 APPLICATION RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS VCC Undervoltage Lockout VCC Shunt Regulator Voltage ICC Supply Current Thresholds vs Temperature vs Temperature vs Temperature
6.0 10.5 300 VCC = 5V VITH/RUN = 1.3V 5.5 10.0 280 9.5 5.0 VTURNON 260 9.0 4.5 (V) ICC = 25mA VOLTS CCV 8.5 240 4.0 V 8.0 TURNOFF SUPPLY CURRENT (μA) ICC = 1mA 220 3.5 7.5 3.0 7.0 200 –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) 38035 G07 38035 G08 38035 G09
Start-Up ICC Supply Current ITH/RUN Shutdown Threshold ITH/RUN Start-Up Current Source vs Temperature vs Temperature vs Temperature
70 500 1000 VCC = VTURNON – 0.1V VCC = VTURNON + 0.1V 450 900 VITH/RUN = 0V 60 400 800 50 350 700 300 600 40 250 500 30 200 400 20 150 300 SHUTDOWN THRESHOLD (mV) 100 /RUN PIN CURRENT SOURCE (nA) 200 START-UP SUPPLY CURRENT (μA) 10 50 I TH 100 0 0 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) 38035 G11 38035 G10 38035 G12
Peak Current Sense Voltage vs Temperature Soft-Start Time vs Temperature
120 1.4 VCC = 5V VCC = 5V 115 1.2 110 1.0 105 0.8 100 0.6 95 SOFT-START TIME (ms) 0.4 SENSE PIN VOLTAGE (mV) 90 85 0.2 80 0 –60 –30 0 30 60 90 120 150 –60 –30 0 30 60 90 120 150 TEMPERATURE (°C) TEMPERATURE (°C) 38035 G13 38035 G14 38035fd 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 APPLICATION RELATED PARTS