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L6986H Datasheet(PDF) 31 Page - STMicroelectronics

Part # L6986H
Description  38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current
PDF  68 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6986H Datasheet(HTML) 31 Page - STMicroelectronics

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Figure 30. Peak current sense operation in overcurrent condition
The DC current flowing in the load in overcurrent condition is:
IDCOC(VOUT)=IMAX−IRIPPLE(VOUT)
2 =IMAX−(VIN−VOUT
2⋅L ⋅TON)
(17)
4.11
OCP and switchover feature
Output capacitor discharging the current flowing to ground during heavy short-circuit events is only limited by
parasitic elements like the output capacitor ESR and short-circuit impedance.
Due to parasitic inductance of the short-circuit impedance, negative output voltage oscillations can be generated
with huge discharging current levels (see Figure 1).
L6986H
OCP and switchover feature
DS12905 - Rev 2
page 31/68



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