Datasheet LTC3374A (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | High Accuracy 8-Channel Parallelable 1A Buck DC/DCs |
| 页数 / 页 | 24 / 5 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 1.7 Mb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. VCC Undervoltage Threshold
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LTC3374A
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. VCC Undervoltage Threshold Buck VIN Undervoltage Threshold VCC Quiescent Current vs Temperature vs Temperature vs Temperature
2.65 2.25 100 ALL ENABLED BUCKS SLEEPING 2.60 2.20 80 VCC RISING VIN RISING 2.55 2.15 60 2.50 2.10 (µA) V I VCC CC FALLING VIN FALLING 40 2.45 UV THRESHOLD (V) 2.05 UV THRESHOLD (V) 2.40 20 2.00 VCC = 2.7V VCC = 3.3V VCC = 5.5V 2.35 1.95 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) 3374A G01 3374A G02 3374A G03
VCC Quiescent Current VCC Quiescent Current RT Programmed Oscillator vs Temperature vs Temperature Frequency vs Temperature
400 400 2.20 ONE BUCK ENABLED, NOT SLEEPING ALL BUCKS ENABLED, NOT SLEEPING RT = 400kΩ SYNC = 0V 350 350 SYNC = 2MHz 2.15 300 300 2.10 250 250 2.05 (µA) 200 (µA) 200 (MHz) 2.00 I VCC I VCC 150 f OSC 150 1.95 100 100 1.90 V VCC = 2.7V V 50 CC = 2.7V CC = 2.7V V 50 CC = 3.3V V 1.85 CC = 3.3V VCC = 3.3V VCC = 5.5V VCC = 5.5V VCC = 5.5V 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) 3374A G04 3374A G05 3374A G06
Default Oscillator Frequency vs Temperature Oscillator Frequency vs VCC
2.20 2.20 2.15 2.15 2.10 2.10 2.05 2.05 VRT = VCC (MHz) 2.00 (MHz) 2.00 R f OSC T = 400kΩ 1.95 f OSC 1.95 1.90 1.90 V 1.85 CC = 2.7V V 1.85 CC = 3.3V VCC = 5.5V 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) 3374A G07 3374A G08 3374af For more information www.linear.com/LTC3374A 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information (http://www.linear.com/product/LTC3374A#orderinfo) 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 Input and Output Decoupling Capacitor Selection Combined Buck Regulators Buck Regulators PCB Considerations Package Description Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. VCC Undervoltage Threshold Buck VIN Undervoltage Threshold VCC Quiescent Current vs Temperature vs Temperature vs Temperature
2.65 2.25 100 ALL ENABLED BUCKS SLEEPING 2.60 2.20 80 VCC RISING VIN RISING 2.55 2.15 60 2.50 2.10 (µA) V I VCC CC FALLING VIN FALLING 40 2.45 UV THRESHOLD (V) 2.05 UV THRESHOLD (V) 2.40 20 2.00 VCC = 2.7V VCC = 3.3V VCC = 5.5V 2.35 1.95 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) 3374A G01 3374A G02 3374A G03
VCC Quiescent Current VCC Quiescent Current RT Programmed Oscillator vs Temperature vs Temperature Frequency vs Temperature
400 400 2.20 ONE BUCK ENABLED, NOT SLEEPING ALL BUCKS ENABLED, NOT SLEEPING RT = 400kΩ SYNC = 0V 350 350 SYNC = 2MHz 2.15 300 300 2.10 250 250 2.05 (µA) 200 (µA) 200 (MHz) 2.00 I VCC I VCC 150 f OSC 150 1.95 100 100 1.90 V VCC = 2.7V V 50 CC = 2.7V CC = 2.7V V 50 CC = 3.3V V 1.85 CC = 3.3V VCC = 3.3V VCC = 5.5V VCC = 5.5V VCC = 5.5V 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) 3374A G04 3374A G05 3374A G06
Default Oscillator Frequency vs Temperature Oscillator Frequency vs VCC
2.20 2.20 2.15 2.15 2.10 2.10 2.05 2.05 VRT = VCC (MHz) 2.00 (MHz) 2.00 R f OSC T = 400kΩ 1.95 f OSC 1.95 1.90 1.90 V 1.85 CC = 2.7V V 1.85 CC = 3.3V VCC = 5.5V 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) 3374A G07 3374A G08 3374af For more information www.linear.com/LTC3374A 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information (http://www.linear.com/product/LTC3374A#orderinfo) 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 Input and Output Decoupling Capacitor Selection Combined Buck Regulators Buck Regulators PCB Considerations Package Description Typical Application Related Parts