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L6986H Datenblatt(PDF) 25 Page - STMicroelectronics

Teilenummer L6986H
Bauteilbeschribung  38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current
PDF  68 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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L6986H Datenblatt(HTML) 25 Page - STMicroelectronics

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The LCM operation satisfies the high efficiency requirements of the battery powered applications. In order to
minimize the regulator quiescent current request from the input voltage, the VBIAS pin can be connected to an
external voltage source in the range 3 V < VBIAS < 5.5 V (see Section 4.1 Power supply and voltage reference).
Given the energy stored in the inductor during a burst, the voltage ripple depends on the capacitor value:
VOUT RIPPLE=ΔQILCOUT=∫0TBURST(iL(t)⋅dt)
COUT
(13)
Figure 22. LCM operation over loading condition (part 1)
L6986H
Light-load operation
DS12905 - Rev 2
page 25/68



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