TSM1121
3.3V 5V 12V HOUSEKEEPING IC
s
s
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s
s
s
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Over voltage protection for 3.3V 5V and
12V without external components
Under voltage protection for 3.3V 5V and
12V without external components
Over voltage protection for -12V or -5V with
external components
Externally adjustable under voltage
blanking during power up
Power good input/output
Externally adjustable pg delay
Fault output
Remote output
Externally adjustable remote delay
Precision voltage reference
2kV ESD protection
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
PIN CONNECTIONS
(top view)
DESCRIPTION
The TSM1121 integrated circuit incorporates all
sensing circuitry to regulate and protect from over
voltage and under voltage a multiple output power
supply (3.3V, 5V and 12V).
TSM1121 incorporates all the necessary functions
for Housekeeping features which allow safe
operation in all conditions, and very high system
integration.
TSM1121 integrates a precise voltage reference.
VS33
VS5
VS12
EP
PI
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VCC
FAULT
PG
TPG
TREM
REM
VREF
APPLICATION
s
PC SMPS triple power line housekeeping ic
(3.3V 5V 12V)
TUV
GND
ORDER CODE
Part
Number
TSM1121CN
TSM1121CD
Temperatur
e Range
0 to 85擄C
0 to 85擄C
Package
Marking
N
鈥?/div>
鈥?/div>
D
TSM1121C
M1121
Note:
N =
Dual in Line Package (DIP)
D =
Small Outline Package (SO) - also available in Tape &
Reel (DT)
May 2003
Revision A
1/11
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