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数据搜索系统，热门电子元器件搜索 |
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VIPER35 数据表(PDF) 12 Page - STMicroelectronics |
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VIPER35 数据表(HTML) 12 Page - STMicroelectronics |
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12 / 44 page  Electrical ratings VIPer35 12/44 DocID026980 Rev 4 Overvoltage protection VOVP Overvoltage threshold 3.8 4.2 4.6 V tSTROBE Strobe time 2.2 µs Oscillator section FOSClim Internal frequency limit VIPER35L 122 136 150 kHz VIPER35H 200 225 250 kHz FSTARTER Starter frequency VFB = 1 V VZCD < VZCDTth t < tSU 1/4 FOSClim kHz VFB =1 V VZCD < VZCDTth t > tSU 1/8 FOSClim kHz Brown-out protection VBRth Brown-out threshold Voltage falling 0.41 0.45 0.49 A VBRHyst Voltage hysteresis above VBRth 40 50 60 mV IBRHyst Current hysteresis 7 12 µA VBRclamp Clamp voltage IBR = 250 µA 3 V VDIS Brown-out disable voltage 50 150 mV Thermal shutdown TSD Thermal shutdown temperature (1) 150 160 °C THYST Thermal shutdown hysteresis (1) 30 °C 1. Specification assured by design, characterization and statistical correlation. Table 7. Controller section (continued) Symbol Parameter Test conditions Min. Typ. Max. Unit |
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