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SI786CSG Fiches technique(PDF) 10 Page - Vishay Siliconix

No de pièce SI786CSG
Description  Dual-Output Power-Supply Controller
Download  14 Pages
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Fabricant  VISHAY [Vishay Siliconix]
Site Internet  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI786CSG Fiches technique(HTML) 10 Page - Vishay Siliconix

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Si786
Vishay Siliconix
www.vishay.com
10
Document Number: 70189
S-40807—Rev. J, 26-Apr-04
SCHEMATIC DRAWINGS
COMPARATOR SUPPLY INPUT
CS3
FB3
SS5
Si786
DH5
ON3
LX3
D1
BST3
D2
VH
Q2
DL5
V+
VL
17
16
18
22
25
27
26
23
21
15
19
24
1
28
Q1
FB5
GND
PGND
REF
DL3
SYNC
BST5
SHDN
ON5
SS3
LX5
DH3
CS5
8
4
6
14
3
13
12
2
20
7
5
11
9
10
N3
D1
D1FS4
(Note 1)
N3
D1
D1FS4
(Note 1)
INPUT
5.5 V to 30 V
3.3 V
at 3 A
C7
150 mF
C12
150 mF
R1
25 mW
L1
10 mH
N1
N2
D2A
1N4148
D2B
1N4148
C5
0.1 mF
C4
0.1 mF
C1
22 mF
C10
22 mF
10 mF
5 V at 5 mA
5 V at
3 A
C6
330 mF
R2
25 mW
L2
10 mH
C9
0.01 mF
C8
0.01 mF
3.3 V ON/OFF
5 V ON/OFF
SHUTDOWN
OSC SYNC
IN
OUT
IN
OUT
COMPARATOR 1
COMPARATOR 2
3.3 V at 5 mA
C3
1 mF
FIGURE 1.
Si786 Application Circuit
Note 1: Use short, Kelvin-connected
PC board traces placed very
close to one another.
0.1 mF
100 W
FIGURE 2.
Si786 Block Diagram
5-V LDO
Linear
Regulator
3.3-V
Reference
ON
300 kHz/200 kHz
Oscillator
ON
3.3-V
PWM
Controller
(See Figure 3)
5-V
PWM
Controller
(See Figure 3)
STANDBY
FB3
CS3
BST3
DH3
LX3
DL3
SS3
ON3
ON5
VH
Q1
Q2
PGND
FB5
CS5
BST5
DH5
LX5
DL5
SS5
V+
VL
REF
SHDN
SYNC
D1
1.65 V
D2
1.65 V
4.5 V
4 V
2.8 V
ON
ON


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