TSM111_03 Datasheet, PDF (1/17 Pages) STMicroelectronics – TRIPLE VOLTAGE AND CURRENT SUPERVISOR

TSM111
TRIPLE VOLTAGE AND CURRENT SUPERVISOR
sOVERVOLTAGE PROTECTION FOR 3.3V, 5V
AND 12V WITHOUT EXTERNAL COMPO-
NENTS
s OVERCURRENT PROTECTION FOR 3.3V,
5V AND 12V WITH INTERNAL THRESHOLD
VOLTAGE
s POWER GOOD CIRCUITRY
s GENERATES POWER GOOD SIGNAL
s REMOTE ON/OFF FUNCTION
s PROGRAMMABLE TIMING FOR POWER
GOOD SIGNAL
s 14.5V TO 36V SUPPLY VOLTAGE RANGE
s TWO 1.6% VOLTAGE REFERENCES FOR
MAIN AND AUXILIARY CONVERTER REG-
ULATION LOOPS
DESCRIPTION
The TSM111 integrated circuit incorporates all
sensing circuit to control a triple output power sup-
ply. It includes voltage references , comparators
and matched resistors bridge for overcurrent and
overvoltage detection without the need of any ex-
ternal components. Timing generator with external
capacitors, control turn On and Off delays. It pro-
vides an integrated and cost effective solution for
simultaneous multiple voltage control.
APPLICATION
This circuit is designed to be used in SMPS for
Desktop PC, to supervise currents and voltages of
all outputs and generate power good information
to the system while managing all timing during
transitory operation.
The IC also manages the standby mode of SMPS
while the PC is in sleep mode.
N
DIP20
(Plastic Package)
D
SO20
(Plastic Micropackage)
ORDER CODE
Part Number Temperature Range
TSM111C
0, +70°C
Example : TSM111CD
Package
N
D
•
•
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
PIN CONNECTIONS (top view)
Vs33 1
Vs5 2
Vs12 3
ADJ 4
Vcc 5
PWM 6
REM 7
Trem 8
PG 9
Tpor 10
20 _Is33
19 _Is5
18 _Is12
17 _Tsur
16 _GND
15 _FbMAIN
14 _VrefMAIN
13 VrefAUX
12 FbAUX
11 UV
January 2003
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