Datasheet LTC3901 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Secondary Side Synchronous Driver for Push-Pull and Full-Bridge Converters |
| Pages / Page | 16 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS. SYNC Negative Threshold vs. … |
| File Format / Size | PDF / 239 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. SYNC Negative Threshold vs. Propagation Delay vs. Temperature. Propagation Delay vs VCC
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LTC3901
W U TYPICAL PERFOR A CE CHARACTERISTICS SYNC Negative Threshold vs Propagation Delay vs Temperature Propagation Delay vs VCC Temperature
–1.0 120 120 V T CC = 5V, 11V A = 25°C VCC = 5V –1.1 110 CLOAD = 4.7nF C 110 LOAD = 4.7nF –1.2 s) s) µ 100 µ 100 –1.3 90 90 –1.4 80 80 –1.5 70 70 –1.6 60 SYNC TO ME PROPAGATION DELAY ( 60 SYNC TO ME PROPAGATION DELAY ( SYNC TO MF SYNC NEGATIVE THRESHOLD (V) –1.7 50 50 SYNC TO MF –1.8 40 40 –50 –25 0 25 50 75 100 125 4 5 6 7 8 9 10 11 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) VCC (V) TEMPERATURE (°C) 3901 G07 3901 G08 3901 G09
Propagation Delay vs CLOAD Rise/Fall Time vs V Rise/Fall Time vs Temperature CC
120 50 50 TA = 25°C T V 45 A = 25°C CC = 5V 45 V 110 CC = 5V CLOAD = 4.7nF CLOAD = 4.7nF 40 40 s) µ 100 35 35 90 30 30 80 25 25 20 20 70 RISE/FALL TIME (ns) 15 RISE/FALL TIME (ns) 15 RISE TIME SYNC TO ME RISE TIME PROPAGATION DELAY ( 60 FALL TIME 10 SYNC TO MF 10 FALL TIME 50 5 5 40 0 0 1 2 3 4 5 6 7 8 9 10 4 5 6 7 8 9 10 11 –50 –25 0 25 50 75 100 125 CLOAD (nF) VCC (V) TEMPERATURE (°C) 3901 G10 3901 G11 3901 G12
Rise/Fall Time vs Load Undervoltage Lockout Threshold Capacitance Voltage vs Temperature
50 4.5 TA = 25°C 4.4 45 VCC = 5V 4.3 40 4.2 RISING EDGE 4.1 35 4.0 30 3.9 3.8 25 3.7 20 3.6 VOLTAGE (V) RISE TIME 3.5 FALLING EDGE RISE/FALL TIME (ns) 15 3.4 FALL TIME 10 3.3 3.2 5 UNDERVOLTAGE LOCKOUT THRESHOLD 3.1 0 3.0 0 1 2 3 4 5 6 7 8 9 10 –50 –25 0 25 50 75 100 125 CLOAD (nF) TEMPERATURE (°C) 3901 G13 3901 G14 3901f 4
W U TYPICAL PERFOR A CE CHARACTERISTICS SYNC Negative Threshold vs Propagation Delay vs Temperature Propagation Delay vs VCC Temperature
–1.0 120 120 V T CC = 5V, 11V A = 25°C VCC = 5V –1.1 110 CLOAD = 4.7nF C 110 LOAD = 4.7nF –1.2 s) s) µ 100 µ 100 –1.3 90 90 –1.4 80 80 –1.5 70 70 –1.6 60 SYNC TO ME PROPAGATION DELAY ( 60 SYNC TO ME PROPAGATION DELAY ( SYNC TO MF SYNC NEGATIVE THRESHOLD (V) –1.7 50 50 SYNC TO MF –1.8 40 40 –50 –25 0 25 50 75 100 125 4 5 6 7 8 9 10 11 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) VCC (V) TEMPERATURE (°C) 3901 G07 3901 G08 3901 G09
Propagation Delay vs CLOAD Rise/Fall Time vs V Rise/Fall Time vs Temperature CC
120 50 50 TA = 25°C T V 45 A = 25°C CC = 5V 45 V 110 CC = 5V CLOAD = 4.7nF CLOAD = 4.7nF 40 40 s) µ 100 35 35 90 30 30 80 25 25 20 20 70 RISE/FALL TIME (ns) 15 RISE/FALL TIME (ns) 15 RISE TIME SYNC TO ME RISE TIME PROPAGATION DELAY ( 60 FALL TIME 10 SYNC TO MF 10 FALL TIME 50 5 5 40 0 0 1 2 3 4 5 6 7 8 9 10 4 5 6 7 8 9 10 11 –50 –25 0 25 50 75 100 125 CLOAD (nF) VCC (V) TEMPERATURE (°C) 3901 G10 3901 G11 3901 G12
Rise/Fall Time vs Load Undervoltage Lockout Threshold Capacitance Voltage vs Temperature
50 4.5 TA = 25°C 4.4 45 VCC = 5V 4.3 40 4.2 RISING EDGE 4.1 35 4.0 30 3.9 3.8 25 3.7 20 3.6 VOLTAGE (V) RISE TIME 3.5 FALLING EDGE RISE/FALL TIME (ns) 15 3.4 FALL TIME 10 3.3 3.2 5 UNDERVOLTAGE LOCKOUT THRESHOLD 3.1 0 3.0 0 1 2 3 4 5 6 7 8 9 10 –50 –25 0 25 50 75 100 125 CLOAD (nF) TEMPERATURE (°C) 3901 G13 3901 G14 3901f 4
