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PM6686 Datasheet(PDF) 33 Page - STMicroelectronics

Part # PM6686
Description  Constant ON-time control
PDF  50 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6686 Datasheet(HTML) 33 Page - STMicroelectronics

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PM6686
Device description
Doc ID 15281 Rev 4
33/50
The section with the EN pin connected to VREF2 begins the soft-start only when the other
section is in regulation (its PGOOD is high) and makes a soft-end suddenly when the other
section is turned off.
Figure 53.
VOUT2 behavior if EN2 is connected to VREF2
To protect the EN1, EN2, EN_LDO and SKIP pin of the PM6686 an external divider or a
series resistor is required, in order to prevent a large inrush current flowing into the device in
case the voltage spike is exceeding the recommended operating conditions.
 
VOUT1
EN1
PGOOD1
OUT2



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