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TD230N Datasheet

  • TD230N

  • ELECTRONIC CIRCUIT BREAKER

  • 15頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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TD230
ELECTRONIC CIRCUIT BREAKER
.
.
.
.
.
.
.
.
TWO N-CHANNEL MOSFETs CONTROL AND
DUAL INDEPENDANT CURRENT SUPERVI-
SION FOR OVER CURRENT PROTECTION
DUAL SUPPLY OPERATION
FROM +3/-5 TO +18/-18V OPERATING VOLT-
AGE
STEP-UPCONVERTER : V
CC
+13.5V OUTPUT
VOLTAGE
A DJ UST A BL E P ROT ECTI O N MODE
(CTRIP1/2)
INHIBIT FUNCTION
SHUTDOWN OUTPUT STATUS
FEW EXTERNAL COMPONENTS
N
DIP16
(Plastic Package)
D
SO16
(Plastic Micropackage)
ORDER CODES
Part Number
Temperature
Range
-40 C, +125 C
o
o
Package
N
鈥?/div>
D
鈥?/div>
DESCRIPTION
The TD230 is designed to control two N-channel
MOSFETs used as power switches in circuit break-
ing applications.
Its current supervision and immediate action on the
switches ensure high security for the boards and
the supplies thus protected against short-circuit or
over current.
In case of short-circuit or over current detection,the
TD230 immediately switches off the corresponding
MOSFET, thus disconnecting the board from the
supply. After several automatic restart attempts, a
definitive shutdown of the circuit is done if the
shortcircuit or over current persists over an exter-
nally adjustable time, until the TD230 is reset by
temporary INHIBIT signal or temporary switching
off of the power supply (hot disconnection/recon-
nection).
If the board is disconnected from the positive sup-
ply by the TD230 it will automatically be disjoncted
from the negative supply too.
TD230 integrates an induction step-up converter
that provides 13.5V above the positive rail to drive
the high side MOSFET.
October 1998
TD230I
PIN CONNECTIONS
P Vcc
1
16
15
14
13
12
11
10
9
REF1
GC1
S ENSP
INHIBIT
SHUTDOWN
SENS N
GC2
REF2
LBOOS T
2
CBOOST
3
OS CGND
4
PM1
GND
PM2
NVcc
5
6
7
8

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