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LTC2901-1IGN датащи(PDF) 7 Page - Linear Technology |
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LTC2901-1IGN датащи(HTML) 7 Page - Linear Technology |
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7 / 16 page ![]() 7 LTC2901 2901is sn2901 RST, WDO, COMPX Voltage Output Low vs Output Sink Current RST High Level Output Voltage vs Output Source Current (LTC2901-2) RST, WDO, COMPX ISINK vs Supply Voltage TYPICAL PERFOR A CE CHARACTERISTICS V1 OR V2 (V) 0 0 2 4 6 1 2 34 2901 G19 5 8 10 1 3 5 7 9 6 VOL = 0.4V TA = 25°C VOL = 0.2V ISINK (mA) 0 20 40 50 90 2901 G20 10 30 60 70 80 3.0 2.5 2.0 1.5 1.0 0.5 0 85 °C 25 °C –40 °C V2 = 3V V1 = 5V Reset Time-Out Period vs Capacitance CRT (FARAD) 10p 100p 10n 1 µ 10 1 100m 10m 1m 100 µ 2901 G18 1n 100n TA = 25°C ISOURCE (mA) 0 0.5 2 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 2901 G21 2.5 1.5 1 85 °C 25 °C –40 °C V1 = 5V V2 = 3V V3 = 2.5V V4 = 1V Watchdog Time-Out Period vs Capacitance CWT (FARAD) 10p 100p 10n 1 µ 100 10 1 100m 10m 1m 2901 G17 1n 100n TA = 25°C V2 (V) 1 0 2 6 8 10 20 14 2 3 3.5 2901 G24 4 16 18 12 1.5 2.5 4 4.5 5 TA = 25°C COMPX and WDO Pull-Up Current vs V2 (COMPX and WDO Held at 0V) COMPX Propagation Delay vs Input Overdrive Above Threshold INPUT OVERDRIVE ABOVE THRESHOLD (mV) 250 200 V1, V2 V3, V4 150 2901 G25 0 100 50 1000 10 100 TA = 25°C RST Pull-Up Current vs V2 (LTC2901-1) RST Pull-Up Current vs V2 (LTC2901-2) V2 (V) 2 0 4 8 12 2.5 3 3.5 4 2901 G26 4.5 16 20 2 6 10 14 18 5 TA = 25°C VRT25 VRT30 VRT33 V2 (V) 2 0 2 4 5 2.5 3 3.5 4 2901 G27 4.5 1 3 6 5 TA = 25°C VRT25 VRT30 VRT33 |
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