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L6732C Fiches technique(PDF) 25 Page - STMicroelectronics

No de pièce L6732C
Description  Soft-start and inhibit
PDF  32 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6732C Fiches technique(HTML) 25 Page - STMicroelectronics

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L6732C
7 L6732C demoboard
25/32
7
L6732C demoboard
7.1
Description
L6732C demoboard realizes in a four layer PCB a step-down DC/DC converter and shows the
operation of the device in a general purpose application. The input voltage can range from 4.5V
to 14V and the output voltage is at 3.3V. The module can deliver an output current in excess of
20A. The switching frequency is set at 250 KHz (controller free-running FSW) but it can be set
to 500KHz acting on the EAREF pin.
Figure 17. Demoboard schematic
Table 6.
Demoboard part list
Reference
Value
Manufacturer
Package
Supplier
R1
1k
Ω
Neohm
SMD 0603
IFARCAD
R2
1k
Ω
Neohm
SMD 0603
IFARCAD
R3
4K7
R4
2k7
Neohm
SMD 0603
IFARCAD
R5
0
Ω
Neohm
SMD 0603
IFARCAD
R6
N.C.
Neohm
SMD 0603
IFARCAD
R7
2K
Neohm
SMD 0603
IFARCAD
R8
10
Ω
Neohm
SMD 0603
IFARCAD
R9
1K5
Neohm
SMD 0603
IFARCAD
L1
Q1-3
Q4-6
D3
9
U1
L6732
VIN
VOUT
12
OCH
C11
GOUT
R9
C9
13
14
10
11
HGATE
PHASE
LGATE
PGND
7
VCC
16
VCC
6
SS
C4
BOOT
D1
15
VCCDR
C10
5
VFB
COMP
R3
R1
C1
R2
C2
C3
R4
R7
8
EAREF
C7
R8
4
3
GND
GIN
OCL
R10
R11
C12-C13
C16-C19
C5
R6
R5
C8
J1
R12
C15
EXTREF
J2
PGOOD
SYNCH
1
2
SYNCH
H
VCCDR
PGOOD
H
R13
C
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Product(s)
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