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A6985F Fiches technique(PDF) 37 Page - STMicroelectronics

No de pièce A6985F
Description  38 V 500 mA synchronous step-down switching regulator
PDF  77 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A6985F Fiches technique(HTML) 37 Page - STMicroelectronics

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A6985F
Functional description
77
Figure 26. Overvoltage operation
5.9
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.
VBIAS pin voltage
regulated output voltage
inductor current
switching node
(purple)
(cyan)



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