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LM1951 Datasheet

  • LM1951

  • LM1951 Solid State 1 Amp Switch

  • 10頁(yè)

  • NSC

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LM1951 Solid State 1 Amp Switch
August 1992
LM1951 Solid State 1 Amp Switch
General Description
The LM1951 is a high current high voltage high side (PNP)
switch with a built-in error detection circuit
The LM1951 is guaranteed to deliver 1 Amp output current
and is capable of withstanding up to
g
85V transients The
built-in error detection provides an error flag output under
the following fault conditions output short to ground or sup-
ply open load current limit overvoltage or thermal shut-
down The LM1951 will drive all types of resistive or induc-
tive loads The output has a built-in negative voltage clamp
b
30V) to provide a quick energy discharge path for
(
inductive loads The LM1951 features TTL and CMOS com-
patible logic input with hysteresis Switching times both turn
on and turn off are 2
ms
(C
load
k
0 005
mF)
In addition its
quiescent current in the OFF state is typically less than
0 1
mA
at room temperature and less than 10
mA
over the
entire operating temperature and voltage range
The LM1951 features make it well suited for industrial and
automotive applications
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
0 1
mA
typical quiescent current (OFF state)
1 Amp output current guaranteed
g
85V transient protection
Reverse voltage protection
Negative output voltage clamp
Error flag output
Internal overvoltage shutdown
Internal thermal shutdown
Short circuit proof
High speed switching (up to 50 kHz)
Inductive or resistive loads
Low ON resistance (1X maximum)
TTL CMOS compatible input with hysteresis
Plastic TO-220 5-lead package
ESD protected
4 5V to 26V operation
Typical Application Circuit and Connection Diagram
TL H 9133 鈥?1
V
IN
0
1
Output
OFF
ON
TO-220 5-Lead
TL H 9133 鈥?2
Front View
Order Number LM1951T
See NS Package Number T05A
C
1995 National Semiconductor Corporation
TL H 9133
RRD-B30M115 Printed in U S A

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