LM1951T National Semiconductor, LM1951T Datasheet

no-image

LM1951T

Manufacturer Part Number
LM1951T
Description
IC SWITCH SOLID ST 1A TO220-5
Manufacturer
National Semiconductor
Type
High Side Switchr
Datasheet

Specifications of LM1951T

Number Of Outputs
1
Internal Switch(s)
Yes
Current Limit
1A
Voltage - Input
4.75 ~ 26 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Rds (on)
-
Other names
*LM1951T

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM1951T
Manufacturer:
NSC
Quantity:
5 510
Part Number:
LM1951T
Manufacturer:
NS
Quantity:
9 616
C 1995 National Semiconductor Corporation
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
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
(
inductive loads The LM1951 features TTL and CMOS com-
patible logic input with hysteresis Switching times both turn
on and turn off are 2 s (C
quiescent current in the OFF state is typically less than
0 1 A at room temperature and less than 10 A over the
entire operating temperature and voltage range
The LM1951 features make it well suited for industrial and
automotive applications
Typical Application Circuit and Connection Diagram
b
30V) to provide a quick energy discharge path for
load k
TL H 9133
0 005 F) In addition its
g
85V transients The
See NS Package Number T05A
Order Number LM1951T
TO-220 5-Lead
V
Front View
0
1
IN
Output
OFF
ON
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
0 1 A typical quiescent current (OFF state)
1 Amp output current guaranteed
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 (1
TTL CMOS compatible input with hysteresis
Plastic TO-220 5-lead package
ESD protected
4 5V to 26V operation
g
85V transient protection
TL H 9133 – 2
maximum)
RRD-B30M115 Printed in U S A
TL H 9133 – 1
August 1992

Related parts for LM1951T

LM1951T Summary of contents

Page 1

... Low ON resistance (1 Y TTL CMOS compatible input with hysteresis Y Plastic TO-220 5-lead package Y ESD protected 26V operation Y V Output IN 0 OFF 1 ON TO-220 5-Lead Front View Order Number LM1951T See NS Package Number T05A August 1992 maximum 9133 – 9133 – 2 RRD-B30M115 Printed ...

Page 2

... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Operational Voltage Sustained Voltage Transient Voltage Protection ( 100 ms 1% Duty Cycle Pins 4 5 Electrical Characteristics V 12V I 500 001 F T ...

Page 3

Typical Performance Characteristics Quiescent Current Voltage Drop ON OFF Threshold (Pin 5) Output Voltage Resistive Load Quiescent Current Voltage Drop Short Circuit Current High Voltage Behavior ON OFF Current (Pin 5) ON OFF Current (Pin 5) Output Voltage Inductive Load ...

Page 4

Error Flag Output Characteristics Open Load Threshold Truth Table Fault Condition Normal Overvoltage Thermal Shutdown V Short to GND OUT V Short to V OUT Open Load Current Limit Open Load Threshold V V Error ...

Page 5

Typical Applications FIGURE 2 60A 3-Phase Mercury Displacement Relay Available from Germanium Power Devices Andover MA Tel (617) 475-5982 FIGURE 3 25A Switch with Short Circuit Foldback FIGURE 1 Solenoid Actuated Valve 9133 – ...

Page 6

Typical Applications (Continued) FIGURE 5 Temperature Controller with Hysteresis FIGURE 4 Latching Switch FIGURE 6 DC Motor Driver 9133 – 9133 – 9133 – 9 ...

Page 7

Typical Applications (Continued) Operation Switch Type Empty Normally Open Fill Normally Closed FIGURE 7 Over-Voltage Crowbar FIGURE 8 Fluid Level Controller FIGURE 9 Indicator Lamp Driver 9133 – 9133 – 9133 ...

Page 8

Application Hints When inductive loads are turned OFF they produce a nega- tive voltage spike The LM1951 contains a voltage clamp that limits these spikes to approximately 30V thus an ex- b ternal clamp is not necessary in most applications ...

Page 9

9 ...

Page 10

... National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Outline Drawing Order Number LM1951T NS Package Number T05A 2 A critical component is any component of a life ...

Related keywords