Datasheet LTC3374 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | 8-Channel Parallelable 1A Buck DC/DCs |
| Seiten / Seite | 26 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. VCC Undervoltage Threshold. Buck VIN … |
| Dateiformat / Größe | PDF / 460 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. VCC Undervoltage Threshold. Buck VIN Undervoltage Threshold. VCC Supply Current
Modelllinie für dieses Datenblatt
Textversion des Dokuments
LTC3374
TYPICAL PERFORMANCE CHARACTERISTICS VCC Undervoltage Threshold Buck VIN Undervoltage Threshold VCC Supply Current vs Temperature vs Temperature vs Temperature
2.70 2.30 60 ALL REGULATORS 55 2.65 2.25 IN SHUTDOWN 50 2.60 2.20 45 VCC RISING VIN RISING 40 2.55 2.15 (µA) 35 2.50 2.10 30 VCC FALLING VIN FALLING 25 2.45 2.05 UV THRESHOLD (V) I VCC_ALLOFF UV THRESHOLD (V) 20 2.40 2.00 15 VCC = 3.3V VCC = 5.5V 10 2.35 1.95 5 VCC = 2.7V 2.30 1.90 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) 3374 G01 3374 G02 3374 G03
VCC Supply Current VCC Supply Current RT Programmed Oscillator vs Temperature vs Temperature Frequency vs Temperature
125 400 2.20 AT LEAST ONE BUCK ENABLED AT LEAST ONE BUCK ENABLED RRT = 402k SYNC = 0V 360 SYNC = 2MHz FB = 850mV 2.15 100 320 2.10 280 VCC = 5.5V 75 2.05 240 V (µA) VCC = 5.5V (µA) CC = 3.3V V 200 (MHz) 2.00 CC = 3.3V I VCC I VCC 50 160 V f OSC CC = 2.7V 1.95 VCC = 2.7V 120 1.90 25 80 VCC = 5.5V 1.85 VCC = 3.3V 40 VCC = 2.7V 0 0 1.80 –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) 3374 G04 3374 G05 3374 G06
Default Oscillator Frequency vs Temperature Oscillator Frequency vs VCC
2.20 2.20 VRT = VCC 2.15 2.15 2.10 2.10 2.05 2.05 VRT = VCC (MHz) 2.00 (MHz) 2.00 RRT = 402k f OSC f OSC 1.95 1.95 1.90 1.90 VCC = 5.5V 1.85 VCC = 3.3V 1.85 VCC = 2.7V 1.80 1.80 –50 –25 0 25 50 75 100 125 150 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 TEMPERATURE (°C) VCC (V) 3374 G07 3374 G08 3374fc 6 For more information www.linear.com/LTC3374 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOOD_ALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Regulators Input and Output Decoupling Capacitor Selection PCB Considerations Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS VCC Undervoltage Threshold Buck VIN Undervoltage Threshold VCC Supply Current vs Temperature vs Temperature vs Temperature
2.70 2.30 60 ALL REGULATORS 55 2.65 2.25 IN SHUTDOWN 50 2.60 2.20 45 VCC RISING VIN RISING 40 2.55 2.15 (µA) 35 2.50 2.10 30 VCC FALLING VIN FALLING 25 2.45 2.05 UV THRESHOLD (V) I VCC_ALLOFF UV THRESHOLD (V) 20 2.40 2.00 15 VCC = 3.3V VCC = 5.5V 10 2.35 1.95 5 VCC = 2.7V 2.30 1.90 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) 3374 G01 3374 G02 3374 G03
VCC Supply Current VCC Supply Current RT Programmed Oscillator vs Temperature vs Temperature Frequency vs Temperature
125 400 2.20 AT LEAST ONE BUCK ENABLED AT LEAST ONE BUCK ENABLED RRT = 402k SYNC = 0V 360 SYNC = 2MHz FB = 850mV 2.15 100 320 2.10 280 VCC = 5.5V 75 2.05 240 V (µA) VCC = 5.5V (µA) CC = 3.3V V 200 (MHz) 2.00 CC = 3.3V I VCC I VCC 50 160 V f OSC CC = 2.7V 1.95 VCC = 2.7V 120 1.90 25 80 VCC = 5.5V 1.85 VCC = 3.3V 40 VCC = 2.7V 0 0 1.80 –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) 3374 G04 3374 G05 3374 G06
Default Oscillator Frequency vs Temperature Oscillator Frequency vs VCC
2.20 2.20 VRT = VCC 2.15 2.15 2.10 2.10 2.05 2.05 VRT = VCC (MHz) 2.00 (MHz) 2.00 RRT = 402k f OSC f OSC 1.95 1.95 1.90 1.90 VCC = 5.5V 1.85 VCC = 3.3V 1.85 VCC = 2.7V 1.80 1.80 –50 –25 0 25 50 75 100 125 150 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 TEMPERATURE (°C) VCC (V) 3374 G07 3374 G08 3374fc 6 For more information www.linear.com/LTC3374 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOOD_ALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Regulators Input and Output Decoupling Capacitor Selection PCB Considerations Package Description Revision History Typical Application Related Parts