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L6983 Folha de dados(PDF) 38 Page - STMicroelectronics

Nome de Peças L6983
Descrição Electrónicos  38 V, 3 A synchronous step-down converter with 17 μA quiescent current
PDF  63 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6983 Folha de dados(HTML) 38 Page - STMicroelectronics

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Figure 35. Power losses VIN = 24 V; VOUT = 5 V; FSW = 0.4 MHZ
0
2
4
6
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0
0.5
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1.5
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2.5
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0.5
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1.5
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IOUT [A]
VIN = 24 V ; VOUT = 5 V ; FSW = 0.4 MHz
LCM
LNM
The following three figures show the efficiency and power losses acquired on the standard evaluation board of the
device, STEVAL-ISA208V1, selecting the following output filter:
•
COUT:
–
1 x CGA6P1X7R1C226M250AC 22 µF 16 V (TDK);
–
2 x CGA5L3X5R1H106K160AB 10 µF 50 V (TDK).
•
Inductor:
–
XAL6060-153ME (Coilcraft).
Figure 36. Efficiency VIN = 12 V; VOUT = 5 V; FSW = 0.4 MHZ
0
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0.5
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1.5
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IOUT [A]
VIN = 12 V; VOUT = 5 V; FSW = 0.4 MHz
LCM
LNM
L6983
Efficiency curves
DS13116 - Rev 1
page 38/63



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