PS232S
Version
Issue Date
File Name
Total Pages
:
A.003
:
2007/03/14
:
SP-PS232S-A.003.doc
:
11
6-Channel Secondary Monitoring IC
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
點晶科技股½有限公司
SILICON TOUCH TECHNOLOGY INC.
PS232S
PS232S
6-Channel Secondary Monitoring IC
General Description
PS232S is specially designed for switching power supply system. Four important
functions of PS232S are the followings: over-voltage protection, over-current protection,
under-voltage protection and power good signal generating.
OVP/UVP (Over-Voltage/Under-Voltage Protection) monitors 3.3V, 5V and quartic
12V to protect our power supply and PC, FPO/ goes to high when one of these supply
voltages exceeds their normal operation voltage range.
OCP (Over Current Protection) monitors IS33, IS5, IS12A, IS12B, IS12C, IS12D
input current sense. An adjustable over-current condition composed of Iref and
“protection current range resistor” helps users design OCP easily.
An additional protection input pin provides the flexibility for design protection
circuit.
Power good signal generating notifies personal computer when power supply is
ready or power supply is going to shutdown, therefore it can provide a reliable power
supply environment.
Features
•
•
•
•
•
•
•
•
•
•
Over/Under-voltage protection and lock out
Over-current protection and lock out
Additional protection input
Fault protection output with open drain output stage
Open drain power good output signal for power good input
Built-in 300mS power good delay
AC on 75ms delay for UV/OC protection
38mS PSON/ control de-bounce
Wide power supply range (3.8V~16V)
Special care for AC power off
6-Channel Secondary Monitoring IC
-1-
Version
：
A.002
點晶科技股½有限公司
SILICON TOUCH TECHNOLOGY INC.
PS232S
Pin Descriptions
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PIN NAME
PGI
GND
FPO/
PSON/
IS12A
RI
IS12B
VS12B
VS12C
VS12D
IS12D
IS12C
Pext
IS5
IS33
VS12A
VS33
VS5
VCC
PGO
Descriptions
Power good input signal pin
Ground
Inverted fault protection output ,open drain output stage
Remote ON/OFF control input pin
12V(1) over current protection input pin
Current sense setting
12V(2) over current protection input pin
12V(2) over/under voltage protection input pin
12V(3) over/under voltage protection input pin
12V(4) over/under voltage protection input pin
12V(4) over current protection input pin
12V(3) over current protection input pin
External protection detect input pin
5.0V over current protection input pin
3.3V over current protection input pin
12V(1) over/under voltage protection input pin
3.3V over/under voltage protection input pin
5.0V over/under voltage protection input pin
Power supply
Power good output signal pin , open drain output stage
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Supply Voltage
(T
stg
)
(T
opr
)
(V
CC
)
VCC
VS12,IS12(A,B,C,D)
VS5, IS5
Input Voltage Range
(V
I
)
VS33, IS33
PGI
PSON/, Pext
Output Voltage Range
Output Current for RI
(V
O
)
(I
RI
)
FPO/
PGO
RI
Rating
-40 to
-30 to
-0.5 to
-0.5 to
-0.5 to
-0.5 to
-0.5 to
-0.5 to
-0.5 to
-0.5 to
12.5 to
+125
+90
+16.0
+16.0
+9.0
+7.0
+16.0
Vcc+0.5
+16.0
Vcc+0.5
62.5
Unit
°C
°C
V
V
V
V
V
V
V
V
uA
6-Channel Secondary Monitoring IC
-4-
Version
：
A.002
DSP and ARM Processors
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