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L6986 bảng dữ liệu(PDF) 33 Page - STMicroelectronics

tên linh kiện L6986
Giải thích chi tiết về linh kiện  38 V, 2 A synchronous step-down switching regulator with 30 A quiescent current
PDF  68 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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L6986 bảng dữ liệu(HTML) 33 Page - STMicroelectronics

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L6986
Functional description
68
generates an overvoltage event. This can be considered as an example for a system with
dynamic performance not in line with the load request.
The L6986 device implements a 1 A typ. negative current limitation to limit the maximum
reversed switch current during the overvoltage operation.
Figure 23. Overvoltage operation
4.9
Thermal shutdown
The shutdown block disables the switching activity if the junction temperature is higher than
a fixed internal threshold (165 °C typical). The thermal sensing element is close to the
power elements, ensuring fast and accurate temperature detection. A hysteresis of
approximately 30 °C prevents the device from turning ON and OFF continuously. When the
thermal protection runs away a new soft-start cycle will take place.



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