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L6917B Datasheet(PDF) 28 Page - STMicroelectronics

Part # L6917B
Description  5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6917B Datasheet(HTML) 28 Page - STMicroelectronics

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Efficiency
Figure 24 showes the system efficiency for output current ranging form 5A up to 50A.
Figure 24. Efficiency (fosc = 200kHz; Vout = 1.7V)
C2
47n
SMD 0805
C3, C4
100n
Ceramic
SMD 0805
C5, C6, C7, C8
1
µ
Ceramic
SMD 1206
C9, C10
10
µ
Ceramic
SMD 1206
C11 to C13
1800
µ/ 16V
Rubycon MBZ
Radial 10x10.5
C14 to C23
2200
µ/ 6.3V
Rubycon MBZ
Radial 10x10.5
Ca
68n
SMD 0805
L1, L2
0.5
µ
77121 Core – 3 Turns
U1
L6917B
STMicroelectronics
SO28
Q1,Q1a, Q3,Q3a
SUB85N03-04P
Vishay - Siliconix
D2PACK
Q2, Q4
SUB70N03-09BP
Vishay - Siliconix
D2PACK
D1, D2
STPS340U
STMicroelectronics
SMB
D3, D4
1N4148
STMicroelectronics
SOT23
Part List (continued)
75
77
79
81
83
85
87
89
0
5
10
15
20
25
30
35
40
45
50
55
Output Current [A]



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