PS222S
Version
Issue Date
File Name
Total Pages
:
A.003
:
2008/01/10
:
SP-PS222S-A.003.doc
:
13
3-Channel Secondary Monitoring IC
With Over-Current Protection
And an Additional 12V OCP Channel
新竹市科學園區展業一路 9 號 7 樓之 1
SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Road I, Science Based Industrial Park,
Hsin-Chu, Taiwan 300, R.O.C.
Tel:886-3-5645656
Fax:886-3-5645626
PS222 S
PS2 S
3-Channel Secondary Monitoring IC
ith er-Current rotection
W
vO
P
And an Additional V CP Channel
21 O
eneral escription
G
D
PS2S is specially designed for switching poer suply system.
w
Four important
functions of S2S are the following: over-voltage protection, over-current protection,
P
under-voltage protection and poer good signal generating.
w
OVP/VP er-Voltage/nder-Voltage Protection) onitors 3.3V, 5V and 2V to
U O v(
U
m
1
protect our poer suply. FPO/ goes to high hen one of these suply oltages
w
w
v
exceeds their normal operation oltage range.
v
OCP er Current Protection) monitors IS33, IS5, IS12 inpt current sense.
O v(
u
Comosed of I
ref
“ and p“rotection current range resistor”, an adjustable over-current
p
“
condition helps users design OCP easily.
An additional OCP channel helps users monitor another 12V rail output current.
Poer good signal generating can notify personal computer hen poer suply is
w
w
w
ready or poer suply is going to shutdown, therefore it can provide a reliable oer
w
p w
suply environment.
eatures
F
3-Channel Secondary Monitoring IC
Version
!
A.001
- 1-