參數(shù)資料
型號(hào)： L6911E
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封裝： SO-20
文件頁(yè)數(shù)： 13/34頁(yè)
文件大?。?/td> 558K
代理商： L6911E
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
Device description
L6911E
20/34
Considering the previous relationships R2, R3, R8 and R9 may be determined in order to
obtain the desired droop effect as follow:
●
Choose a value for R2 in the range of hundreds of K
to obtain realistic values for the
other components.
●
From the above equations, it results:
Equation 15
Equation 16
Where IMAX is the maximum output current.
●
The component R3 must be chosen in order to obtain R3 << R8//R9 to permit these
and successive simplifications.
Therefore, with the droop function the output voltage decreases as the load current
increases, so the DC output impedance is equal to a resistance ROUT. It is easy to verify that
the output voltage deviation under load transient is minimum when the output impedance is
constant with frequency.
R8
V
+
R2
V
PROG
-----------------------
R
L
I
MAX
V
DROOP
--------------------------
=
R9
R8
=
V
DROOP
R
L
I
MAX
--------------------------
1
V
DROOP
R
L
I
MAX
--------------------------
+
------------------------------------
相關(guān)PDF資料
PDF描述
L6911ETR 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
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參數(shù)描述
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L6913-2 制造商:Thomas & Betts 功能描述:1/2 CORD GRIP CONNECTOR,2/BG
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