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FSBH0170ANY Folha de dados(PDF) 14 Page - Fairchild Semiconductor |
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FSBH0170ANY Folha de dados(HTML) 14 Page - Fairchild Semiconductor |
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14 / 16 page ![]() © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 • Rev. 1.0.3 14 6V 4.6V R 3R VFB KA431 Vo PWM OLP 56ms Feedback Open Loop Figure 34. OLP Operation VDD Over-Voltage Protection (OVP) VDD over-voltage protection prevents IC damage caused by over voltage on the VDD pin. The OVP is triggered when VDD voltage reaches 28V. Debounce time (typically 130µs) prevents false trigger by switching noise. Over-Temperature Protection (OTP) The SenseFET and the control IC are integrated, making it easier to detect the temperature of the SenseFET. When the temperature exceeds approximately 142°C, thermal shutdown is activated. |
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