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L6375S 데이터시트(PDF) 8 Page - STMicroelectronics |
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L6375S 데이터시트(HTML) 8 Page - STMicroelectronics |
8 / 17 page Electrical specifications L6375S 8/17 2.4 Switching waveform Figure 3. Switching waveform 2.5 Input section An Single ended Input TTL/CMOS compatible with wide voltage range and high noise immunity (thanks to a built in hysteresis) is available. 2.6 Over temperature protection (OVT) An on-chip Over Temperature Protection provides an excellent protection of the device in extreme conditions. Whenever the temperature - measured on a central portion of the chip exceeds Tmax = 150 oC (typical value) the device is shut off, and the DIAG2 output goes LOW. Normal operation is resumed as the chip temperature (normally after few seconds) falls below Tmax - Thys = 130 oC (typical value). The hysteresis avoid that is an intermittent behavior take place. 2.7 Under voltage protection (UV) The supply voltage is expected to range from 8 to 35V. In this range the device operates correctly. To avoid any misfunctioning the supply voltage is continuously monitored to provide an under voltage protection. As Vs falls below Vsth-Vshys (typically 7.5 V, see fig.1) the output power MOS is switched off and DIAG1 and DIAG2 (see Diagnostic truth table). Normal operation is resumed as soon as Vs exceeds Vsth. The hysteretic behavior prevents intermittent operation at low supply voltage. |
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