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L6986 Folha de dados(PDF) 33 Page - STMicroelectronics

Nome de Peças L6986
Descrição Electrónicos  38 V, 2 A synchronous step-down switching regulator with 30 A quiescent current
PDF  68 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6986 Folha de dados(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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