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L6984 Datenblatt(PDF) 21 Page - STMicroelectronics

Teilenummer L6984
Bauteilbeschribung  36 V 400 mA synchronous step-down switching regulator
PDF  34 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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L6984 Datenblatt(HTML) 21 Page - STMicroelectronics

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L6984
Device description
34
Figure 14. Valley current sense implements constant current protection
3.7
PGOOD
The internal circuitry monitors the regulated output voltage and keeps the PGOOD open
collector output in low impedance as long as the feedback voltage is below the VPGD L
threshold (see Table 5).
Figure 15. PGOOD behavior during soft-start time
The PGOOD is driven low impedance if VFB = VCC (internal voltage divider, see Section 3.1
on page 12) and VBIAS > VPGD H threshold (see Table 5 on page 7).
The VPGD H threshold has no effect on PGOOD behavior in case the external voltage divider
is being used.



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