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L6985F Datasheet(PDF) 33 Page - STMicroelectronics

Part # L6985F
Description  Internal current limiting
PDF  65 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6985F Datasheet(HTML) 33 Page - STMicroelectronics

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L6985F
Functional description
65
Figure 24. Zoomed waveform
The VBIAS pin absolute maximum ratings (see Table 2: Absolute maximum ratings on
page 6) must be satisfied over the different dynamic conditions.
If the VBIAS is connected to GND there are no issues (see Figure 23 and Figure 24).
A small resistor value (few
) in series with the VBIAS can help to limit the pin negative
voltage (see Figure 25) during heavy short-circuit events if it is connected to the regulated
output voltage.
short-circuit current
regulated output voltage
inductor current
switching node



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