Datasheet LTC3370 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | 4-Channel 8A Configurable Buck DC/DCs |
| Seiten / Seite | 24 / 7 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. … |
| Dateiformat / Größe | PDF / 810 Kb |
| Dokumentensprache | Englisch |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Oscillator Frequency vs RT. VTEMP vs Temperature
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LTC3370
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Oscillator Frequency vs RT VTEMP vs Temperature Enable Threshold vs Temperature
4.0 1400 900 VCC = 3.3V ILOAD = 0mA ALL REGULATORS DISABLED 850 3.5 1200 V V CC = 3.3V CC = 3.3V 800 3.0 1000 750 EN RISING 2.5 800 700 (mV) 650 (MHz) 2.0 600 ACTUAL V 600 f OSC TEMP 1.5 V TEMP 400 550 EN THRESHOLD (mV) 1.0 200 500 450 0.5 0 IDEAL V 400 EN FALLING TEMP 0 –200 350 250 300 350 400 450 500 550 600 650 700 750 800 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 RT (kΩ) TEMPERATURE (°C) TEMPERATURE (°C) 3370 G10 3370 G11 3370 G12
Enable Pin Precision Threshold Buck VIN Supply Current vs Buck VIN Supply Current vs vs Temperature Temperature Temperature
405 50 550 Burst Mode OPERATION FORCED CONTINUOUS MODE FB = 850mV 500 400 FB = 0V EN RISING 40 450 395 (µA) 400 390 350 30 (µA) 300 385 250 20 380 EN FALLING I VIN_BURST 200 EN THRESHOLD (mV) 150 375 10 VIN = 2.25V I VIN_FORCED_CONTINUOUS 100 VIN = 2.25V 370 VIN = 3.3V VIN = 3.3V V 50 IN = 5.5V VIN = 5.5V 365 0 0 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3370 G13 3370 G14 3370 G15
PMOS Current Limit vs VOUT vs Temperature Temperature PMOS RDS(ON) vs Temperature
1.88 2.6 550 FORCED CONTINUOUS MODE VIN = 3.3V VIN = 2.25V 1.86 ILOAD = 0mA 500 2.5 VIN = 3.3V V 1.84 450 IN = 5.5V 2.4 1.82 400 (V) (mΩ) 1.80 (A) D 2.3 350 V OUT I FW 1.78 R DS(ON) 300 2.2 1.76 V 250 IN = 2.25V 2.1 1.74 VIN = 3.3V 200 VIN = 5.5V 1.72 2.0 150 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3370 G16 3370 G17 3370 G18 3370fb For more information www.linear.com/LTC3370 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOODALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Power Stages Input and Output Decoupling Capacitor Selection PCB Considerations Typical Applications Package Description Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Oscillator Frequency vs RT VTEMP vs Temperature Enable Threshold vs Temperature
4.0 1400 900 VCC = 3.3V ILOAD = 0mA ALL REGULATORS DISABLED 850 3.5 1200 V V CC = 3.3V CC = 3.3V 800 3.0 1000 750 EN RISING 2.5 800 700 (mV) 650 (MHz) 2.0 600 ACTUAL V 600 f OSC TEMP 1.5 V TEMP 400 550 EN THRESHOLD (mV) 1.0 200 500 450 0.5 0 IDEAL V 400 EN FALLING TEMP 0 –200 350 250 300 350 400 450 500 550 600 650 700 750 800 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 RT (kΩ) TEMPERATURE (°C) TEMPERATURE (°C) 3370 G10 3370 G11 3370 G12
Enable Pin Precision Threshold Buck VIN Supply Current vs Buck VIN Supply Current vs vs Temperature Temperature Temperature
405 50 550 Burst Mode OPERATION FORCED CONTINUOUS MODE FB = 850mV 500 400 FB = 0V EN RISING 40 450 395 (µA) 400 390 350 30 (µA) 300 385 250 20 380 EN FALLING I VIN_BURST 200 EN THRESHOLD (mV) 150 375 10 VIN = 2.25V I VIN_FORCED_CONTINUOUS 100 VIN = 2.25V 370 VIN = 3.3V VIN = 3.3V V 50 IN = 5.5V VIN = 5.5V 365 0 0 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3370 G13 3370 G14 3370 G15
PMOS Current Limit vs VOUT vs Temperature Temperature PMOS RDS(ON) vs Temperature
1.88 2.6 550 FORCED CONTINUOUS MODE VIN = 3.3V VIN = 2.25V 1.86 ILOAD = 0mA 500 2.5 VIN = 3.3V V 1.84 450 IN = 5.5V 2.4 1.82 400 (V) (mΩ) 1.80 (A) D 2.3 350 V OUT I FW 1.78 R DS(ON) 300 2.2 1.76 V 250 IN = 2.25V 2.1 1.74 VIN = 3.3V 200 VIN = 5.5V 1.72 2.0 150 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3370 G16 3370 G17 3370 G18 3370fb For more information www.linear.com/LTC3370 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOODALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Power Stages Input and Output Decoupling Capacitor Selection PCB Considerations Typical Applications Package Description Typical Application Related Parts