Datasheet LTC3731H (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | 3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller |
| Seiten / Seite | 34 / 6 — Short-Circuit Arming and Latchoff. RUN/SS Pull-Up Current. vs … |
| Dateiformat / Größe | PDF / 442 Kb |
| Dokumentensprache | Englisch |
Short-Circuit Arming and Latchoff. RUN/SS Pull-Up Current. vs Temperature. Supply Current vs Temperature. Maximum Current Sense
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LTC3731H Typical perForMance characTerisTics
Short-Circuit Arming and Latchoff RUN/SS Pull-Up Current vs Temperature Supply Current vs Temperature vs Temperature
5 100 3.0 2.8 VCC = 5V VRUN/SS = 1.9V ARMING 4 SHUTDOWN CURRENT (µA) 2.4 80 2.5 2.0 2.0 TAGE (V) 3 LATCHOFF 60 1.6 1.5 2 Y CURRENT (mA) 1.2 40 1.0 RUN/SS PIN VOL SUPPL 0.8 1 20 RUN/SS PULLUP CURRENT (µA) 0.4 0.5 0 0 0 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) 3731H G10 3731H G11 3731H G12
Maximum Current Sense Maximum ISENSE vs VRUN/SS Threshold vs Duty Factor Peak Current Threshold vs VITH
80 75 75 70 60 60 (mV) 50 45 50 SENSE 40 TAGE (mV) 30 VOL 30 TAGE THRESHOLD (mV) 25 15 MAXIMUM I I SENSE VOL 20 0 10 I SENSE 0 0 –15 0 1 2 3 4 5 6 0 20 40 60 80 100 0 0.6 1.2 1.8 2.4 VRUN/SS VOLTAGE (V) DUTY FACTOR (%) VITH (V) 3731H G13 3731H G14 3731H G15
Percentage of Nominal Output Maximum Duty Factor vs Peak ISENSE (Foldback) vs Temperature ISENSE Pin Current vs VOUT
80 100 40 VPLLFLTR = 0V 70 30 98 60 20 50 TAGE (mV) ACTOR (%) 96 10 Y F VOL 40 0 SENSE 30 94 PIN CURRENT (µA) –10 PEAK I 20 I SENSE MAXIMUM DUT 92 10 –20 0 90 –30 0 10 20 30 40 50 60 70 80 90 100 –50 –25 0 25 50 75 100 125 150 0 1 2 3 4 5 PERCENTAGE OF NOMINAL OUTPUT VOLTAGE (%) TEMPERATURE (°C) VOUT (V) 3731H G17 3731H G16 3731H G18 3731Hfb Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
Short-Circuit Arming and Latchoff RUN/SS Pull-Up Current vs Temperature Supply Current vs Temperature vs Temperature
5 100 3.0 2.8 VCC = 5V VRUN/SS = 1.9V ARMING 4 SHUTDOWN CURRENT (µA) 2.4 80 2.5 2.0 2.0 TAGE (V) 3 LATCHOFF 60 1.6 1.5 2 Y CURRENT (mA) 1.2 40 1.0 RUN/SS PIN VOL SUPPL 0.8 1 20 RUN/SS PULLUP CURRENT (µA) 0.4 0.5 0 0 0 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) 3731H G10 3731H G11 3731H G12
Maximum Current Sense Maximum ISENSE vs VRUN/SS Threshold vs Duty Factor Peak Current Threshold vs VITH
80 75 75 70 60 60 (mV) 50 45 50 SENSE 40 TAGE (mV) 30 VOL 30 TAGE THRESHOLD (mV) 25 15 MAXIMUM I I SENSE VOL 20 0 10 I SENSE 0 0 –15 0 1 2 3 4 5 6 0 20 40 60 80 100 0 0.6 1.2 1.8 2.4 VRUN/SS VOLTAGE (V) DUTY FACTOR (%) VITH (V) 3731H G13 3731H G14 3731H G15
Percentage of Nominal Output Maximum Duty Factor vs Peak ISENSE (Foldback) vs Temperature ISENSE Pin Current vs VOUT
80 100 40 VPLLFLTR = 0V 70 30 98 60 20 50 TAGE (mV) ACTOR (%) 96 10 Y F VOL 40 0 SENSE 30 94 PIN CURRENT (µA) –10 PEAK I 20 I SENSE MAXIMUM DUT 92 10 –20 0 90 –30 0 10 20 30 40 50 60 70 80 90 100 –50 –25 0 25 50 75 100 125 150 0 1 2 3 4 5 PERCENTAGE OF NOMINAL OUTPUT VOLTAGE (%) TEMPERATURE (°C) VOUT (V) 3731H G17 3731H G16 3731H G18 3731Hfb Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts