Datasheet LTC1698 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | Isolated Secondary Synchronous Rectifier Controller |
| Seiten / Seite | 24 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS. VFB vs Temperature. VFB vs VDD. VFB … |
| Dateiformat / Größe | PDF / 1.1 Mb |
| Dokumentensprache | Englisch |
TYPICAL PERFOR A CE CHARACTERISTICS. VFB vs Temperature. VFB vs VDD. VFB vs VMARGIN. Current Limit Amplifier gm
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LTC1698
W U TYPICAL PERFOR A CE CHARACTERISTICS VFB vs Temperature VFB vs VDD VFB vs VMARGIN
1.248 1.248 1.295 5 VDD = 8V TA = 25°C VDD = 8V 1.282 T 4 A = 25°C 1.242 1.242 1.270 3 1.258 2 1.236 1.236 ∆ 1.245 1 VFB (V) (V) (V) (%) 1.233 0 FB FB V V FBV 1.230 1.230 1.221 –1 1.208 –2 1.224 1.224 1.196 –3 1.184 –4 1.218 1.218 1.171 –5 –50 –25 0 25 50 75 100 125 150 5 6 7 8 9 10 11 12 13 14 0 0.33 0.66 0.99 1.32 1.65 1.98 2.31 2.64 2.97 3.3 TEMPERATURE (°C) VDD (V) VMARGIN (V) 1698 G01 1698 G02 1698 G03
Current Limit Amplifier gm ISNS Threshold vs Temperature ISNS Threshold vs VDD vs Temperature
–22.5 –22.5 5.0 VDD = 8V TA = 25°C VDD = 8V –23.0 –23.0 4.6 –23.5 –23.5 –24.0 –24.0 4.2 –24.5 –24.5 3.8 –25.0 –25.0 (millimho) –25.5 –25.5 3.4 THRESHOLD (mV) THRESHOLD (mV) –26.0 g mILIM I SNS –26.0 I SNS 3.0 –26.5 –26.5 2.6 –27.0 –27.0 –27.5 –27.5 2.2 –50 –25 0 25 50 75 100 125 150 5 6 7 8 9 10 11 12 13 14 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VDD (V) TEMPERATURE (°C) 1698 G04 1698 G05 1698 G06
Power Good Threshold OVPIN Threshold vs Temperature OVPIN Threshold vs VDD vs Temperature
1.28 1.28 1.196 –3.0 VDD = 8V TA = 25°C VDD = 8V 1.26 1.26 1.181 –4.2 ∆ 1.24 1.24 1.166 –5.4 VFB (%) 1.22 1.22 1.152 –6.6 OVPIN THRESHOLD (V) OVPIN THRESHOLD (V) 1.20 1.20 POWER GOOD THRESHOLD (V) 1.137 –7.8 1.18 1.18 1.122 –9.0 –50 –25 0 25 50 75 100 125 150 5 6 7 8 9 10 11 12 13 14 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VDD (V) TEMPERATURE (°C) 1698 G07 1698 G08 1698 G09 1698f 4
W U TYPICAL PERFOR A CE CHARACTERISTICS VFB vs Temperature VFB vs VDD VFB vs VMARGIN
1.248 1.248 1.295 5 VDD = 8V TA = 25°C VDD = 8V 1.282 T 4 A = 25°C 1.242 1.242 1.270 3 1.258 2 1.236 1.236 ∆ 1.245 1 VFB (V) (V) (V) (%) 1.233 0 FB FB V V FBV 1.230 1.230 1.221 –1 1.208 –2 1.224 1.224 1.196 –3 1.184 –4 1.218 1.218 1.171 –5 –50 –25 0 25 50 75 100 125 150 5 6 7 8 9 10 11 12 13 14 0 0.33 0.66 0.99 1.32 1.65 1.98 2.31 2.64 2.97 3.3 TEMPERATURE (°C) VDD (V) VMARGIN (V) 1698 G01 1698 G02 1698 G03
Current Limit Amplifier gm ISNS Threshold vs Temperature ISNS Threshold vs VDD vs Temperature
–22.5 –22.5 5.0 VDD = 8V TA = 25°C VDD = 8V –23.0 –23.0 4.6 –23.5 –23.5 –24.0 –24.0 4.2 –24.5 –24.5 3.8 –25.0 –25.0 (millimho) –25.5 –25.5 3.4 THRESHOLD (mV) THRESHOLD (mV) –26.0 g mILIM I SNS –26.0 I SNS 3.0 –26.5 –26.5 2.6 –27.0 –27.0 –27.5 –27.5 2.2 –50 –25 0 25 50 75 100 125 150 5 6 7 8 9 10 11 12 13 14 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VDD (V) TEMPERATURE (°C) 1698 G04 1698 G05 1698 G06
Power Good Threshold OVPIN Threshold vs Temperature OVPIN Threshold vs VDD vs Temperature
1.28 1.28 1.196 –3.0 VDD = 8V TA = 25°C VDD = 8V 1.26 1.26 1.181 –4.2 ∆ 1.24 1.24 1.166 –5.4 VFB (%) 1.22 1.22 1.152 –6.6 OVPIN THRESHOLD (V) OVPIN THRESHOLD (V) 1.20 1.20 POWER GOOD THRESHOLD (V) 1.137 –7.8 1.18 1.18 1.122 –9.0 –50 –25 0 25 50 75 100 125 150 5 6 7 8 9 10 11 12 13 14 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VDD (V) TEMPERATURE (°C) 1698 G07 1698 G08 1698 G09 1698f 4