Datasheet LT3439 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Slew Rate Controlled Ultralow Noise 1A Isolated DC/DC Transformer Driver |
| Pages / Page | 12 / 3 — TYPICAL PERFOR A CE CHARACTERISTICS. Minimum Input Voltage. Supply … |
| File Format / Size | PDF / 196 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Minimum Input Voltage. Supply Current in Shutdown Mode. Oscillator Frequency
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LT3439
W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Input Voltage Supply Current in Shutdown Mode Oscillator Frequency vs Temperature vs Temperature vs Temperature
2.750 16 120 RT = 16.9k 2.700 14 115 CT = 680pF 2.650 12 110 µA) 2.600 17.5V 10 105 2.550 8 100 2.500 5V 6 95 INPUT VOLTAGE (V) 2.450 SUPPLY CURRENT ( 4 90 2.400 2.7V OSCILLATOR FREQUENCY (kHz) 2.350 2 85 2.300 0 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) 3439 G01 3439 G02 3439 G03
Switch Voltage Drop SHDN Pin Hysteresis Current vs Switch Current Supply Current vs Slew Resistor vs Temperature
0.9 25 24 TA = 25°C 0.8 125°C 22 20 0.7 µA) 20 0.6 85°C 15 0.5 18 25°C 0.4 16 10 0.3 SWITCH VOLTAGE (V) SUPPLY CURRENT (mA) 14 0.2 SHDN PIN CURRENT ( 5 12 0.1 0 0 10 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 10000 20000 30000 40000 –50 –25 0 25 50 75 100 125 150 SWITCH CURRENT (A) SLEW RESISTOR (Ω) TEMPERATURE (°C) 3439 G04 3439 G05 3439 G06
SHDN Pin Voltage Threshold SYNC Pin Voltage Threshold Current Limit vs Temperature vs Temperature vs Temperature
2.0 1.35 1.6 1.34 1.8 1.5 1.33 1.6 1.4 1.32 1.4 1.31 1.3 1.30 1.2 1.2 CURRENT LIMIT (A) THRESHOLD VOLTAGE (V) 1.29 VOLTAGE THRESHOLD (V) 1.0 1.1 1.28 0.8 1.27 1.0 –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) 3439 G07 3439 G08 3439 G09 sn3439 3439fs 3
W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Input Voltage Supply Current in Shutdown Mode Oscillator Frequency vs Temperature vs Temperature vs Temperature
2.750 16 120 RT = 16.9k 2.700 14 115 CT = 680pF 2.650 12 110 µA) 2.600 17.5V 10 105 2.550 8 100 2.500 5V 6 95 INPUT VOLTAGE (V) 2.450 SUPPLY CURRENT ( 4 90 2.400 2.7V OSCILLATOR FREQUENCY (kHz) 2.350 2 85 2.300 0 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) 3439 G01 3439 G02 3439 G03
Switch Voltage Drop SHDN Pin Hysteresis Current vs Switch Current Supply Current vs Slew Resistor vs Temperature
0.9 25 24 TA = 25°C 0.8 125°C 22 20 0.7 µA) 20 0.6 85°C 15 0.5 18 25°C 0.4 16 10 0.3 SWITCH VOLTAGE (V) SUPPLY CURRENT (mA) 14 0.2 SHDN PIN CURRENT ( 5 12 0.1 0 0 10 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 10000 20000 30000 40000 –50 –25 0 25 50 75 100 125 150 SWITCH CURRENT (A) SLEW RESISTOR (Ω) TEMPERATURE (°C) 3439 G04 3439 G05 3439 G06
SHDN Pin Voltage Threshold SYNC Pin Voltage Threshold Current Limit vs Temperature vs Temperature vs Temperature
2.0 1.35 1.6 1.34 1.8 1.5 1.33 1.6 1.4 1.32 1.4 1.31 1.3 1.30 1.2 1.2 CURRENT LIMIT (A) THRESHOLD VOLTAGE (V) 1.29 VOLTAGE THRESHOLD (V) 1.0 1.1 1.28 0.8 1.27 1.0 –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) 3439 G07 3439 G08 3439 G09 sn3439 3439fs 3
