Datasheet LT3956 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | 80VIN, 80VOUT Constant-Current, Constant-Voltage Converter |
| Seiten / Seite | 20 / 5 — TA = 25°C, unless otherwise noted. FB Regulation Voltage (VFB). vs … |
| Dateiformat / Größe | PDF / 1.5 Mb |
| Dokumentensprache | Englisch |
TA = 25°C, unless otherwise noted. FB Regulation Voltage (VFB). vs Temperature. VREF Voltage vs Temperature
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LT3956 Typical perForMance characTerisTics
TA = 25°C, unless otherwise noted. FB Regulation Voltage (VFB) vs Temperature VREF Voltage vs Temperature VREF Voltage vs VIN
1.28 2.04 2.04 1.27 2.03 2.03 1.26 2.02 2.02 1.25 2.01 2.01 (V) 1.24 (V) 2.00 (V) 2.00 V FB V REF V REF 1.23 1.99 1.99 1.22 1.98 1.98 1.21 1.97 1.97 1.20 1.96 1.96 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 20 40 60 80 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3956 G04 3956 G05 3956 G06
Switching Frequency EN/UVLO Hysteresis Current Switching Frequency vs RT vs Temperature vs Temperature
10000 500 2.4 RT = 26.7k 450 2.2 1000 (µA) 400 2.0 I EN/UVLO 100 350 1.8 SWITCHING FREQUENCY (kHz) SWITCHING FREQUENCY (kHz) 10 300 1.6 10 100 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 RT (k) TEMPERATURE (°C) TEMPERATURE (°C) 3956 G07 3956 G08 3956 G09
SW Pin Current Limit EN/UVLO Threshold Quiescent Current vs VIN vs Temperature vs Temperature
2.0 4.4 1.28 PWM = 0V 1.26 1.5 4.2 EN/UVLO RISING 1.24 1.0 4.0 1.22 EN/UVLO FALLING CURRENT (mA) V IN CURRENT LIMIT (A) EN/UVLO VOLTAGE (V) 0.5 3.8 1.20 0 3.6 1.18 0 20 40 60 80 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 V TEMPERATURE (°C) TEMPERATURE (°C) IN (V) 3956 G11 3956 G12 3956 G10 3956f Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Package Description Typical Application Related Parts
TA = 25°C, unless otherwise noted. FB Regulation Voltage (VFB) vs Temperature VREF Voltage vs Temperature VREF Voltage vs VIN
1.28 2.04 2.04 1.27 2.03 2.03 1.26 2.02 2.02 1.25 2.01 2.01 (V) 1.24 (V) 2.00 (V) 2.00 V FB V REF V REF 1.23 1.99 1.99 1.22 1.98 1.98 1.21 1.97 1.97 1.20 1.96 1.96 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 20 40 60 80 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3956 G04 3956 G05 3956 G06
Switching Frequency EN/UVLO Hysteresis Current Switching Frequency vs RT vs Temperature vs Temperature
10000 500 2.4 RT = 26.7k 450 2.2 1000 (µA) 400 2.0 I EN/UVLO 100 350 1.8 SWITCHING FREQUENCY (kHz) SWITCHING FREQUENCY (kHz) 10 300 1.6 10 100 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 RT (k) TEMPERATURE (°C) TEMPERATURE (°C) 3956 G07 3956 G08 3956 G09
SW Pin Current Limit EN/UVLO Threshold Quiescent Current vs VIN vs Temperature vs Temperature
2.0 4.4 1.28 PWM = 0V 1.26 1.5 4.2 EN/UVLO RISING 1.24 1.0 4.0 1.22 EN/UVLO FALLING CURRENT (mA) V IN CURRENT LIMIT (A) EN/UVLO VOLTAGE (V) 0.5 3.8 1.20 0 3.6 1.18 0 20 40 60 80 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 V TEMPERATURE (°C) TEMPERATURE (°C) IN (V) 3956 G11 3956 G12 3956 G10 3956f Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Package Description Typical Application Related Parts