Si9139 Datasheet, PDF (9/17 Pages) Vishay Siliconix – Multi-Output, Individual On/Off Control Power-Supply Controller

New Product
Si9139
Vishay Siliconix
STANDARD APPLICATION CIRCUIT (BUCK−BOOST AUXILIARY)
V_OUTA
C6
330 mF
V_IN
4.5 ~ 30 V
C7
33 mF
Q1
Si7888
R₁
0.02 W
L2
10 mH
CMPD2836
C1
0.1 mF
V_IN
22
BST_A
24
DH_A
26
25 ^LXA
D1A
V_L
21
BST_B
17
DH_B
15
LX_B
16
DL_B
18
D1B
C2
0.1 mF
Q4
Si7886
C4
33 mF
+5 V
C5
10 mF
Q2
Si7888
L1, 10 mH
R₂
0.02 W
V_OUTB
C3
330 mF
SS34
SS34
PGND*
GND*
3.3 V
1 mA
C11
1 mF
Q3
Si7886
DL_A
23
CS_A
28
V_L
20 kW
FB_A
27
RESET
1
ON_A
12
ON_B
13
REF
11
GND
10
CS_B
14
FB_B
20
BST_C
3
DH_C
LX_C
D3
CMPD2836
C8
0.1 mF
4
5
D2, BYS10-35
DL_C
6
CSP
7
C9
4.7 mF
Q5
Si3456
L3, 10 mH
D4, BYS10-35
Q6
Si3456
V_OUTC
1.24 to 20 V
500 mA
C10
100 mF
0.2 W
R₃
R₅
CSN
8
FB_C
2
COMP
9
PGND
C12
R₆
19
120 pF
*PGND and GND planes should be connected to a single point (star) ground.
Figure 1.A
Document Number: 71841
S-22317—Rev. A, 16-Dec-02
www.vishay.com
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