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L6910 Datenblatt(PDF) 15 Page - STMicroelectronics

Teilenummer L6910
Bauteilbeschribung  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
PDF  21 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6910 Datenblatt(HTML) 15 Page - STMicroelectronics

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L6910A L6910
Efficiency
Figure 13 shows the measured efficiency versus load current at Vin=5V.
In the application three mosfets STS11NF30L (30V, 9m
Ω typ @ Vgs = 10V) are used for high side swith while
two of them are used for the low side..
Figure 13. Demo Board Efficiency @ Vin = 5V & Vout = 3.3V
Table 2. Part List
R2
10k
SMD 0805
R3
4.7k
1%
SMD 0805
R4
220
SMD 0805
R5
10k
SMD 0805
R6
10
SMD 0805
R7
620
SMD 0805
R9
0
SMD 0805
R10
1.74k
1%
SMD 0805
C1,C2, C3
680
µ
OSCON - 6SP680M
Radial 10x10.5mm
C4 to C8
330
µ
POSCAP - 6TPB330M
SMD 7343
C13, C15
100n
Ceramic
SMD 0805
C14, C16
1n
Ceramic
SMD 0805
C18
2.2n
Ceramic
SMD 0805
C19
3.3n
Ceramic
SMD 0805
C20
6.8n
Ceramic
SMD 0805
L1
1.5
µ
T44-52 Core, 7T-18AWG
L2
1.1
µ
T50-52B Core, 6T
U1
L6910
STMicroelectronics
SO16 NARROW
Q1 to Q5
STS11NF30L
STMicroelectronics
SO8
D1
1N4148
STMicroelectronics
SOT23
D2
STPS340U
STMicroelectronics
SMB
F1
251015A-15°
Littlefuse
AXIAL
85
87
89
91
93
95
97
0
5
10
15
20
25
Output current



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