PS222S Datasheet, PDF (3/13 Pages) List of Unclassifed Manufacturers – 3-Channel Secondary Monitoring IC With Over-Current Protection And an Additional 12V OCP Channel

Block Diagram
PS222S
Vcc / VSx
VS12
VS5
VS33
ISX
IS12
IS5
IS33
155KΩ
VCCI
12 UV
9KΩ Vref
VCCI
12 OV
16KΩ Vref
58KΩ
VCCI
5 UV
13.5KΩ Vref
18.5KΩ ^Vref
VCCI
5 OV
38.5KΩ
VCCI
3.3 UV
23.5KΩ Vref
28KΩ Vref
VCCI
3.3 OV
Step Down
to near 2.5V
Iref X 8
Step Down
to near 2.5V
Iref X 8
Step Down
to near 2.5V
Iref X 8
Step Down
to near 2.5V
Iref X 8
VCCI
Vcc OC
VCCI
12 OC
VCCI
5 OC
VCCI
3.3 OC
73uS
De-bounce
38mS
De-bounce
SQ
R
delay
1MΩ
FPO/
H : 4mS
L : 4.5uS
VCCI
1.25V
VCC
30KΩ
2KΩ
PSON/
4.5V
90KΩ
delay
H : 75mS
L : 4.5uS
1
0
R
QS
73uS
De-bounce
delay
H : 300mS
L : 4.5uS
VCCI
1.13V
VCCI
0.63V
VCCI
1.25V
PGI
VCCI
1MΩ
PGO
delay
H : 20mS
L : 4.5uS
Power On
Reset
Internal
Power
POR
VCCI = 4V
Constant Current
Source Iref
RI
Band-Gap
Reference
Vref
1.25V
Clock
Generator
CLK
GND
3-Channel Secondary Monitoring IC
Version：A.001
-2-