Si9139 Datasheet, PDF (10/17 Pages) Vishay Siliconix – Multi-Output, Individual On/Off Control Power-Supply Controller

Si9139
Vishay Siliconix
New Product
STANDARD APPLICATION CIRCUIT (5−V INPUT Ċ AUXILIARY IN BOOST MODE)
V_IN
4.5 ~ 5.5 V
C7
33 mF
Q1
Si7888
V_OUTA
R₁
0.02 W
L2
10 mH
C6
330 mF
SS34
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
Q3
Si7886
DL_A
23
CS_A
28
DL_B
18
CS_B
14
FB_B
20
D1B
C2
0.1 mF
Q4
Si7886
C4
33 mF
Q2
Si7888
L1, 10 mH
SS34
R₂
0.02 W
V_OUTB
C3
330 mF
PGND*
GND*
3.3 V
1 mA
C11
1 mF
V_L
20 kW
FB_A
27
RESET
1
DL_C
6
CSP
7
ON_A
12
ON_B
13
REF
11
GND
10
CSN
8
FB_C
2
COMP
9
PGND
19
L3, 10 mH _{D4, BYS10-35}
Q6
Si3456
V_OUTC
(V_IN +0.5 V) to
20 V
500 mA
C10
100 mF
0.2 W
R₃
R₅
C12
R₆
120 pF
*PGND and GND planes should be connected to a single point (star) ground.
Figure 1.B
www.vishay.com
10
Document Number: 71841
S-22317—Rev. A, 16-Dec-02