Datasheet LT3514 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | Triple Step-Down Switching Regulator with 100% Duty Cycle Operation |
| Seiten / Seite | 26 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| Dateiformat / Größe | PDF / 482 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Input Voltage Undervoltage
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LT3514
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Input Voltage Undervoltage Input Quiescent Current vs Input Lockout VIN Pin Current Voltage
3.6 10 40 3.4 9 35 8 3.2 30 7 3.0 25 6 2.8 (µA) 5 20 UVLO (V) I VIN 2.6 4 15 3 2.4 10 2 INPUT QUIESCENT CURRENT (mA) 2.2 5 ALL SS = 2V 1 ALL SS = 0V 2.0 0 0 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) VEN/UVLO (V) INPUT VOLTAGE (V) 3514 G13 3514 G14 3514 G15
Switching Frequency FB Voltage vs RUN/SS Soft Start Current vs Temperature
900 0 1.20 RT = 18.2k 800 –0.2 1.15 700 –0.4 1.10 –0.6 600 –0.8 1.05 500 (µA) TAGE (mV) –1.0 1.00 400 I RUN/SS –1.2 0.95 FB VOL 300 –1.4 FREQUENCY (MHz) 200 0.90 –1.6 100 –1.8 0.85 0 –2.0 0.80 0 200 400 600 800 1000 1200 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 150 RUN/SS VOLTAGE (mV) TEMPERATURE (°C) TEMPERATURE (°C) 3514 G16 3514 G17 3514 G18
Switch and Diode Current Limit, Switch Voltage Drop Channel 3 Switch and Diode Current Limit
700 4.0 2.0 CHANNELS 1, 4 3.8 1.9 600 3.6 1.8 500 3.4 1.7 3.2 400 1.6 TAGE DROP (mV) CHANNELS 1, 4 3.0 1.5 300 CHANNEL 3 2.8 1.4 200 CURRENT LIMIT (A) 2.6 CURRENT LIMIT (A) 1.3 SWITCH VOL 2.4 1.2 100 2.2 1.1 0 2.0 1.0 0 500 1000 1500 2000 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 SWITCH CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3514 G19 3514 G20 3514 G21 3514fa 6 For more information www.linear.com/LT3514 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Input Voltage Undervoltage Input Quiescent Current vs Input Lockout VIN Pin Current Voltage
3.6 10 40 3.4 9 35 8 3.2 30 7 3.0 25 6 2.8 (µA) 5 20 UVLO (V) I VIN 2.6 4 15 3 2.4 10 2 INPUT QUIESCENT CURRENT (mA) 2.2 5 ALL SS = 2V 1 ALL SS = 0V 2.0 0 0 –50 –25 0 25 50 75 100 125 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) VEN/UVLO (V) INPUT VOLTAGE (V) 3514 G13 3514 G14 3514 G15
Switching Frequency FB Voltage vs RUN/SS Soft Start Current vs Temperature
900 0 1.20 RT = 18.2k 800 –0.2 1.15 700 –0.4 1.10 –0.6 600 –0.8 1.05 500 (µA) TAGE (mV) –1.0 1.00 400 I RUN/SS –1.2 0.95 FB VOL 300 –1.4 FREQUENCY (MHz) 200 0.90 –1.6 100 –1.8 0.85 0 –2.0 0.80 0 200 400 600 800 1000 1200 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 150 RUN/SS VOLTAGE (mV) TEMPERATURE (°C) TEMPERATURE (°C) 3514 G16 3514 G17 3514 G18
Switch and Diode Current Limit, Switch Voltage Drop Channel 3 Switch and Diode Current Limit
700 4.0 2.0 CHANNELS 1, 4 3.8 1.9 600 3.6 1.8 500 3.4 1.7 3.2 400 1.6 TAGE DROP (mV) CHANNELS 1, 4 3.0 1.5 300 CHANNEL 3 2.8 1.4 200 CURRENT LIMIT (A) 2.6 CURRENT LIMIT (A) 1.3 SWITCH VOL 2.4 1.2 100 2.2 1.1 0 2.0 1.0 0 500 1000 1500 2000 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 SWITCH CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3514 G19 3514 G20 3514 G21 3514fa 6 For more information www.linear.com/LT3514 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts