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L6982 датащи(PDF) 29 Page - STMicroelectronics

номер детали L6982
подробное описание детали  38 V, 2 A synchronous step-down converter with low quiescent current
PDF  48 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6982 датащи(HTML) 29 Page - STMicroelectronics

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9
Application board
The figure below shows the reference evaluation board schematic:
Figure 30. Evaluation board schematic
EN
VIN _L6982
R6
n.m.
C1
10
mF
L3
MPZ2012S221A
L1 22mH
+
C10
n.m.
C6
TP3
VIN
TP2
CLK_IN
R5
n.m.
L4
4.7
mH
R1
0 Ohm
TP4
GND
J2
C8
10pF
C2
1
mF
U1
L6982CDR
SW
1
BOOT
2
VCC
3
FB
4
EN/ SY NC
5
AGND
6
VIN
7
PGND
8
TP6
VOUT
J1
L1 MSS1038T-223ML
R2
402K
C11
4.7
mF
C5
10
mF
VIN _L6982
C14
C7
100nF
C13
n.m.
TP5
GND
C12
EMI FIlters. Optional Component
s
R4
10k
C9
n.m.
EN
C4
22
mF
TP1
EN
L2
n.m.
R3
82.5K
C3
1
mF 10V
4.7
mF
4.7
mF
10
mF
The additional input filter (C11, L3, C12, L4, C14 and C10) limits the conducted emission on the power supply.
Table 9. Bill of material
Reference
Part number
Description
Manufacturer
C1
C3216X7R1H106K160AC
10 µF
TDK
C2
CGA4J3X7R1H105K125AB
1 µF
TDK
C3
1 µF
C4
GRJ32EC71E226KE11
22 µF
Murata
C5, C6
C3216X7R1H106K160AC
10 µF
TDK
C7
100 nF
C8
10 pF
C9
n.m.
C10
n.m.
C11, C12, C14
GRM31CR71H475KA12
4.7 µF
Murata
C13
L1
MSS1038T-223ML
22 µH
Coilcraft
L2
n.m.
L3
MPZ2012S221AT000
220 Ω, 100 MHz
TDK
L4
XAL4030-472ME
4.7 µH
Coilcraft
R1
0 Ω
R2
402 kΩ
L6982
Application board
DS13683 - Rev 1
page 29/48



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