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S-19501AFJA-E8T1U4 Datasheet(PDF) 8 Page - Seiko Instruments Inc |
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S-19501AFJA-E8T1U4 Datasheet(HTML) 8 Page - Seiko Instruments Inc |
8 / 52 page FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH WATCHDOG TIMER AND RESET FUNCTION S-19500/19501 Series Rev.1.2_01 8 Recommended Operation Conditions Table 9 Item Symbol Condition Min. Typ. Max. Unit VIN pin voltage VIN − 4.0 − 36.0 V When using autonomous watchdog operation function*1 VOUT(S) + 1.0 − 36.0 V VOUT pin voltage VOUT Detector block 1.0 − − V Watchdog timer block +VDET − − V Watchdog input voltage "H"*2 VWIH − 2 − − V Watchdog input voltage "L"*2 VWIL − − − 0.8 V Watchdog input "H" time*2 thigh VWI ≥ VWIH 5.0 − − μs Watchdog input "L" time*2 tIow VWI ≤ VWIL 5.0 − − μs Slew rate*2 dVWI dt VWI = VWIL + (VWIH − VWIL) × 0.1 to VWIL + (VWIH − VWIL) × 0.9 1 − − V/ μs Watchdog input frequency fWI Duty ratio 50% − − 0.2 MHz WEN pin input voltage "H" VWENH − 2.0 − VOUT(S) V WEN pin input voltage "L" VWENL − 0 − 0.8 V *1. Refer to "3. Watchdog timer block" in " Operation" for the autonomous watchdog operation function. *2. When inputting a rising edge that satisfies the condition of Figure 4 to the WI pin, the watchdog timer detects a trigger. The signal input from the monitored object by the watchdog timer should satisfy the condition of Figure 4. VWIH VWIL VWI tlow thigh dVWI dt t Figure 4 |
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