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L6732TR Datasheet(PDF) 30 Page - STMicroelectronics

Part # L6732TR
Description  Adjustable step-down controller with synchronous rectification
PDF  36 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6732TR Datasheet(HTML) 30 Page - STMicroelectronics

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L6732 demoboards
L6732
30/36
7.2
5A board description and PCB layout
L6732 5A demoboard realizes in a two 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 of up to 5A.
The switching frequency is set at 250KHz (controller free-running FSW) but it can be set to
500KHz acting on the EAREF pin. Compared to the 20A version, the only difference of this
board, compared to the first one, is the presence of a dual mosfet chip, for the High-side and
Low-side Mosfets; besides R15 has been inserted between High side mosfet Gate and Phase
pin; R14 has been inserted between Low side mosfet Gate and Pgnd pin.
Table 9.
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
4K99
Neohm
SMD 0603
IFARCAD
R8
10
Ω
Neohm
SMD 0603
IFARCAD
R9
2K49
Neohm
SMD 0603
IFARCAD
R10
2.2
Ω
Neohm
SMD 0603
IFARCAD
R11
2.2
Ω
Neohm
SMD 0603
IFARCAD
R12
N.C.
Neohm
SMD 0603
IFARCAD
R13
10K
Neohm
SMD 0603
IFARCAD
R14
N.C.
Neohm
SMD 0603
IFARCAD
R15
N.C.
Neohm
SMD 0603
IFARCAD
C1
4.7nF
Kemet
SMD 0603
IFARCAD
C2
47nF
Kemet
SMD 0603
IFARCAD
C3
1nF
Kemet
SMD 0603
IFARCAD
C4
100nF
Kemet
SMD 0603
IFARCAD
C5
100nF
Kemet
SMD 0603
IFARCAD
C6
N.C.
///
C7
100nF
Kemet
SMD 0603
IFARCAD
C8
4.7uF 20V
AVX
SMA6032
IFARCAD
C9
1nF
Kemet
SMD 0603
IFARCAD
C10
1uF
Kemet
SMD 0603
IFARCAD



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