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NCP392BRFCCT1G Datasheet(PDF) 6 Page - ON Semiconductor |
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NCP392BRFCCT1G Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 10 page NCP392B www.onsemi.com 6 Operation The NCP392B provides over−voltage protection for positive voltage surge, up to +28 V. An additional clamp, between IN and GND, protects the part against surge test, following IEC 61000−4−5 standard. A protected VBUS_DET output pin provides a secondary supply for the platform biasing. Under−voltage Lockout (UVLO) To ensure proper operation under any conditions, the device has a built−in under−voltage lock out (UVLO) circuit. This circuit has a built−in hysteresis to provide noise immunity to transient conditions. Over−voltage Lockout (OVLO) To protect connected systems on Vout pin from over−voltage, the device has a built−in over−voltage lock out (OVLO) circuit. During over−voltage condition, the output remains disabled until the input voltage is above OVLO – hysteresis. Figure 4. UVLO, OVLO and /EN Functionality /EN VIN OVLO VOUT UVLO VBUS DET VBUSTHRES tOFF tSOFT tRISE tSTART tVBUS tSOFT tRISE tSTART tOFF tVBUS |
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