Datasheet LTC3900 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Synchronous Rectifier Driver for Forward Converters |
| Pages / Page | 20 / 5 — Typical perForMance characTerisTics. Propagation Delay vs CLOAD. … |
| File Format / Size | PDF / 288 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Propagation Delay vs CLOAD. Rise/Fall Time vs VCC. Rise/Fall Time vs Temperature
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LTC3900
Typical perForMance characTerisTics Propagation Delay vs CLOAD Rise/Fall Time vs VCC Rise/Fall Time vs Temperature
120 50 50 TA = 25°C T V 45 A = 25°C 45 CC = 5V 110 VCC = 5V CLOAD = 4.7nF CLOAD = 4.7nF 40 40 100 35 35 90 30 30 80 25 25 20 20 70 RISE TIME RISE/FALL TIME (ns) 15 RISE/FALL TIME (ns) 15 SYNC TO FG PROPAGATION DELAY (ns) 60 RISE TIME SYNC TO CG 10 10 FALL TIME 50 FALL TIME 5 5 40 0 0 1 2 3 4 5 6 7 8 9 10 4 5 6 7 8 9 10 11 –75 –50 –25 0 25 50 75 100 125 150 CLOAD (nF) V TEMPERATURE (°C) CC (V) 3900 G10 3900 G11 3900 G12
Rise/Fall Time vs Load Undervoltage Lockout Threshold Capacitance Voltage vs Temperature
50 T 4.4 45 A = 25°C VCC = 5V 40 4.2 RISING EDGE 35 4.0 30 3.8 25 20 3.6 RISE TIME VOLTAGE (V) RISE/FALL TIME (ns) 15 FALLING EDGE FALL TIME 3.4 10 3.2 5 UNDERVOLTAGE LOCKOUT THRESHOLD 0 3.0 0 1 2 3 4 5 6 7 8 9 10 –75 –50 –25 0 25 50 75 100 125 150 CLOAD (nF) TEMPERATURE (°C) 3900 G13 3900 G14
VCC Supply Current vs VCC Supply Current vs Load Temperature Capacitance
20 30 CLOAD = 4.7nF TA = 25°C 18 fSYNC = 100kHz 25 16 VCC = 11V VCC = 11V 20 14 12 15 10 SUPPLY CURRENT (mA) 10 8 SUPPLY CURRENT (mA) V V CC VCC = 5V CC = 5V 6 5 4 0 –75 –50 –25 0 25 50 75 100 125 150 0 1 2 3 4 5 6 7 8 9 10 TEMPERATURE (°C) C 3900 G15 LOAD (nF) 3900 G16 3900fb 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
Typical perForMance characTerisTics Propagation Delay vs CLOAD Rise/Fall Time vs VCC Rise/Fall Time vs Temperature
120 50 50 TA = 25°C T V 45 A = 25°C 45 CC = 5V 110 VCC = 5V CLOAD = 4.7nF CLOAD = 4.7nF 40 40 100 35 35 90 30 30 80 25 25 20 20 70 RISE TIME RISE/FALL TIME (ns) 15 RISE/FALL TIME (ns) 15 SYNC TO FG PROPAGATION DELAY (ns) 60 RISE TIME SYNC TO CG 10 10 FALL TIME 50 FALL TIME 5 5 40 0 0 1 2 3 4 5 6 7 8 9 10 4 5 6 7 8 9 10 11 –75 –50 –25 0 25 50 75 100 125 150 CLOAD (nF) V TEMPERATURE (°C) CC (V) 3900 G10 3900 G11 3900 G12
Rise/Fall Time vs Load Undervoltage Lockout Threshold Capacitance Voltage vs Temperature
50 T 4.4 45 A = 25°C VCC = 5V 40 4.2 RISING EDGE 35 4.0 30 3.8 25 20 3.6 RISE TIME VOLTAGE (V) RISE/FALL TIME (ns) 15 FALLING EDGE FALL TIME 3.4 10 3.2 5 UNDERVOLTAGE LOCKOUT THRESHOLD 0 3.0 0 1 2 3 4 5 6 7 8 9 10 –75 –50 –25 0 25 50 75 100 125 150 CLOAD (nF) TEMPERATURE (°C) 3900 G13 3900 G14
VCC Supply Current vs VCC Supply Current vs Load Temperature Capacitance
20 30 CLOAD = 4.7nF TA = 25°C 18 fSYNC = 100kHz 25 16 VCC = 11V VCC = 11V 20 14 12 15 10 SUPPLY CURRENT (mA) 10 8 SUPPLY CURRENT (mA) V V CC VCC = 5V CC = 5V 6 5 4 0 –75 –50 –25 0 25 50 75 100 125 150 0 1 2 3 4 5 6 7 8 9 10 TEMPERATURE (°C) C 3900 G15 LOAD (nF) 3900 G16 3900fb 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
