Datasheet LTC3900 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Synchronous Rectifier Driver for Forward Converters |
| 页数 / 页 | 20 / 4 — Typical perForMance characTerisTics. Timeout vs V CC. Timeout vs … |
| 文件格式/大小 | PDF / 288 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics. Timeout vs V CC. Timeout vs Temperature. Timeout vs RTMR. Current Sense Threshold vs
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LTC3900
Typical perForMance characTerisTics Timeout vs V CC Timeout vs Temperature Timeout vs RTMR
5.25 5.25 10 T VCC = 5V T 5.20 A = 25°C 5.20 A = 25°C R R 9 TMR = 51k TMR = 51k VCC = 5V 5.15 CTMR = 470pF 5.15 CTMR = 470pF C 8 TMR = 470pF 5.10 5.10 7 5.05 5.05 6 5.00 5.00 5 TIMEOUT (µs) 4.95 TIMEOUT (µs) 4.95 4 TIMEOUT (µs) 4.90 4.90 3 4.85 4.85 2 4.80 4.80 1 4.75 4.75 0 4 5 6 7 8 9 10 11 –75 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 70 80 90 100 VCC (V) TEMPERATURE (°C) R 3900 G01 3900 G02 TMR (kΩ) 3900 G03
Current Sense Threshold vs VCS(MAX) Clamp Voltage vs CS+ SYNC Positive Threshold vs Temperature Input Current Temperature
18 1.8 17 VCC = 5V, 11V TA = 25°C 17 1.7 15 16 1.6 13 15 1.5 11 VCC = 11V 14 1.4 9 V CLAMP VOLTAGE (V) CC = 5V 13 1.3 7 12 1.2 V CS(MAX) CURRENT SENSE THRESHOLD (mV) 5 SYNC POSITIVE THRESHOLD (V) 11 1.1 3 10 1.0 –75 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) CS+ INPUT CURRENT (mA) TEMPERATURE (°C) 3900 G04 3900 G05 3900 G06
SYNC Negative Threshold vs Propagation Delay vs Temperature Propagation Delay vs VCC Temperature
–1.0 120 120 VCC = 5V, 11V TA = 25°C VCC = 5V –1.1 110 CLOAD = 4.7nF 110 CLOAD = 4.7nF –1.2 100 100 –1.3 90 90 –1.4 80 80 –1.5 70 70 SYNC TO FG –1.6 PROPAGATION DELAY (ns) 60 SYNC TO FG PROPAGATION DELAY (µs) 60 SYNC NEGATIVE THRESHOLD (V) SYNC TO CG –1.7 50 SYNC TO CG 50 –1.8 40 40 –75 –50 –25 0 25 50 75 100 125 150 4 5 6 7 8 9 10 11 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VCC (V) TEMPERATURE (°C) 3900 G07 3900 G08 3900 G09 3900fb 4 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 Timeout vs V CC Timeout vs Temperature Timeout vs RTMR
5.25 5.25 10 T VCC = 5V T 5.20 A = 25°C 5.20 A = 25°C R R 9 TMR = 51k TMR = 51k VCC = 5V 5.15 CTMR = 470pF 5.15 CTMR = 470pF C 8 TMR = 470pF 5.10 5.10 7 5.05 5.05 6 5.00 5.00 5 TIMEOUT (µs) 4.95 TIMEOUT (µs) 4.95 4 TIMEOUT (µs) 4.90 4.90 3 4.85 4.85 2 4.80 4.80 1 4.75 4.75 0 4 5 6 7 8 9 10 11 –75 –50 –25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 70 80 90 100 VCC (V) TEMPERATURE (°C) R 3900 G01 3900 G02 TMR (kΩ) 3900 G03
Current Sense Threshold vs VCS(MAX) Clamp Voltage vs CS+ SYNC Positive Threshold vs Temperature Input Current Temperature
18 1.8 17 VCC = 5V, 11V TA = 25°C 17 1.7 15 16 1.6 13 15 1.5 11 VCC = 11V 14 1.4 9 V CLAMP VOLTAGE (V) CC = 5V 13 1.3 7 12 1.2 V CS(MAX) CURRENT SENSE THRESHOLD (mV) 5 SYNC POSITIVE THRESHOLD (V) 11 1.1 3 10 1.0 –75 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) CS+ INPUT CURRENT (mA) TEMPERATURE (°C) 3900 G04 3900 G05 3900 G06
SYNC Negative Threshold vs Propagation Delay vs Temperature Propagation Delay vs VCC Temperature
–1.0 120 120 VCC = 5V, 11V TA = 25°C VCC = 5V –1.1 110 CLOAD = 4.7nF 110 CLOAD = 4.7nF –1.2 100 100 –1.3 90 90 –1.4 80 80 –1.5 70 70 SYNC TO FG –1.6 PROPAGATION DELAY (ns) 60 SYNC TO FG PROPAGATION DELAY (µs) 60 SYNC NEGATIVE THRESHOLD (V) SYNC TO CG –1.7 50 SYNC TO CG 50 –1.8 40 40 –75 –50 –25 0 25 50 75 100 125 150 4 5 6 7 8 9 10 11 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VCC (V) TEMPERATURE (°C) 3900 G07 3900 G08 3900 G09 3900fb 4 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