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A6986 Datasheet(PDF) 26 Page - STMicroelectronics

No. de pieza A6986
Descripción Electrónicos  38 V, 2 A synchronous step-down switching regulator with 30 µA quiescent current
PDF  67 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A6986 Datasheet(HTML) 26 Page - STMicroelectronics

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Functional description
A6986
26/67
DocID026211 Rev 6
external voltage source in the range 3 V < VBIAS < 5.5 V (see Chapter 5.1: Power supply
and voltage reference on page 15).
In case the VBIAS pin is connected to the regulated output voltage (VOUT), the total current
drawn from the input voltage can be calculated as Equation 14.
Figure 14. LCM operation at zero load
Given the energy stored in the inductor during a burst, the voltage ripple depends on the
capacitor value:
Equation 13
VOUT RIPPLE
Q
IL
COUT
--------------
iL t dt

0
TBURST
COUT
--------------------------------------------
==



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