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TDF1779A Datasheet

  • TDF1779A

  • DUAL 2-A SOURCE DRIVER

  • 9頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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TDF1779A
DUAL 2-A SOURCE DRIVER
.
.
.
.
.
OUTPUT CURRENT UP TO 2.5 A
WIDE RANGE OF SUPPLY VOLTAGE : + 8 V
TO + 26 V
CAN WITHSTAND OVERVOLTAGES OF AS
HIGH AS 60 V BETWEEN V
CC
AND GROUND
OUTPUT VOLTAGE CAN SWING TO LOWER
THAN GROUND
鈥漇ENSE鈥?AND 鈥滱LARM鈥?OUTPUTS ARE OPEN
COLLECTOR OUTPUTS
MULTIWATT-11
DESCRIPTION
The TDF1779A is a dual source driver delivering
hihg outputcurrents and the capabilityto drive highly
inductive loads (Electrovalves, contractors, re-
lays...).
This device is essentially blow-out proof, each out-
put is protected against short-circuits. If internal dis-
sipation becomes too high, drivers will shut down to
prevent excessive heating. An 鈥滱LARM鈥?output is
provided to indicate the action of the thermal protec-
tion. To reactivate the power outputs, the reset input
must be forced to low state.
鈥漇ENSE鈥?information of both power outputs are
ORed together and then processed internally.
A 鈥漇TROBE鈥?input is also provided to offer the pos-
sibility of disabling the power outputs.
PIN CONNECTION
ORDERING NUMBER
: TDE 1779ASP
1-
2-
3-
4-
5-
6-
7-
8-
9-
10 -
11 -
Tab is connected to pin 6
Output 1
V
CC
Output 2
N.C.
Strobe
Ground
Input 2
Sense output
Alarm output
Reset input
Input 1
April 1993
1/9

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