LM1950 Switch Datasheet

LM1950 Datasheet, PDF, Equivalent


Part Number

LM1950

Description

750mA High Side Switch

Manufacture

National Semiconductor

Total Page 6 Pages
Datasheet
Download LM1950 Datasheet


LM1950
December 1991
LM1950 750 mA High Side Switch
General Description
The LM1950 is a high current high side (PNP) power switch
for driving ground referenced loads Intended for industrial
and automotive applications the LM1950 is guaranteed to
deliver 750 mA continuous load current (with typically 1 4
Amps peak) and can withstand supply voltage transients up
to a60V and b50V When switched OFF the quiescent
current drain from the input power supply is less than
100 mA which can allow continuous connection to a battery
power source
The LM1950 will drive all types of resistive or reactive loads
To obtain a rapid decay time of the energy in inductive
loads the output is internally protected but not clamped and
can swing below ground to at least 54V negative with re-
spect to the input power supply voltage
The ON OFF input can be driven with standard 5V TTL or
CMOS compatible logic levels independent of the VCC sup-
ply voltage used Built in protection features include short
circuit protection thermal shutdown over-voltage shutdown
to protect load circuits and protection against reverse polari-
ty input connections The LM1950 is available in a 5-lead
power TO-220 package and specified over a wide b40 C to
125 C operating temperature range
Features
Y 750 mA continuous output drive current
Y Less than 100 mA quiescent current in OFF state
Y Low input output voltage drop
Y a60V b50V transient protection
Y Drives resistive or reactive loads
Y Unclamped output for fast inductive decay tmies
Y Reverse battery protected
Y Short circuit proof
Y Overvoltage shutdown to protect loads
Y TTL CMOS compatible control input
Y Thermal overload protection
Applications
Y Relay driver
Y Solenoid Valve driver
Y Lamp driver
Y Load circuit switching
Y Motor driver
Typical Application
Connection Diagram
TO 220 5 Lead
TL H 11237 – 1
Required for stability
C1995 National Semiconductor Corporation TL H 11237
Front View
Order Number LM1950T
See NS Package Number T05A
TL H 11237 – 2
RRD-B30M115 Printed in U S A

LM1950
Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
Continuous
Transient (us 100 ms)
Reverse Polarity (continuous)
26V
b50V to a60V
b15V
On Off Voltage
b0 3V to a6 0V
Power Dissipation
Internally Limited
Load Inductance
150 mH
Maximum Junction Temperature
150 C
Storage Temperature Range
Lead Temperature
(Soldering 10 seconds)
ESD Susceptibility (Note 2)
b65 C to a150 C
230 C
2000V
Operating Ratings (Note 1)
Temperature Range (TA)
Supply Voltage Range
b40 C to a125 C
4 75V to 26V
Thermal Resistances
Junction to Case (ij-c)
Case to Ambient (ic-a)
3C W
50 C W
Electrical Characteristics
VCC e 14V IOUT e 150 mA unless otherwise indicated Boldface limits apply over the entire operating temperature range
b40 C s TA s 125 C all other specifications are for TA e TJ e 25 C
Parameter
Conditions
Typical
Limit
Units
(Limit)
Supply Voltage
Operational
Survival
Transient
t e 1 ms u e 100 ms
1% dutycycle
4 75 4 75
26 26
b15 b15
60 60
b50 b50
V (Min)
V (Max)
VDC (Min)
V (Max)
V (Min)
Supply Current
Input to Output
Voltage Drop
Short Circuit Current
VON OFF e 0 8V
VON OFF e 2 0V
IOUT e 0 mA
IOUT e 250 mA
IOUT e 500 mA
IOUT e 750 mA
IOUT e 250 mA
IOUT e 500 mA
IOUT e 750 mA
20
100 100
mA(Max)
5
10 10
mA (Max)
275
350 350
mA (Max)
550
700 700
mA (Max)
825
950 950
mA (Max)
0 30
0 50
0 75
05 06
07 10
11 14
V (Max)
V (Max)
V (Max)
15
1 0 0 75
A (Min)
20 20
A (Max)
Output Leakage Current
ON OFF Input
Threshold Voltage
VON OFF e 0 8V
10
50 50
mA (Max)
14
08 08
V (Min)
20 20
V (Max)
ON OFF Input Current
Overvoltage Shutdown
Threshold
VON OFF e 0 8V
VON OFF e 2 0V
VON OFF e 5 25V
01
5 10
mA (Max)
1
10 20
mA (Max)
50
100 100
mA (Max)
33
27 27
V (Min)
37 37
V (Max)
Inductive Clamp
Output Voltage
Output Turn-On Delay
Output Turn-Off Delay
VON OFF e 2V to 0 8V
IOUT e 100 mA
VON OFF 0 8V to 2V
VON OFF 2V to 0 8V
b45
42
45
b120 b120
b40 b40
20
20
V (Max)
V (Min)
ms
ms
Note 1 Absolute Maximum Ratings indicate limits beyond which damage to the device may occur Operating Ratings indicate conditions for which the device is
intended to be functional but do not guarantee specific performance limits For guaranteed specifications and test conditions see the Electrical Characteristics
Note 2 Human body model 100 pF discharged through a 1 5 kX resistor
2


Features LM1950 750 mA High Side Switch December 1991 LM1950 750 mA High Side Switch General Description The LM1950 is a hig h current high side (PNP) power switch for driving ground referenced loads Int ended for industrial and automotive app lications the LM1950 is guaranteed to d eliver 750 mA continuous load current ( with typically 1 4 Amps peak) and can w ithstand supply voltage transients up t o a60V and b50V When switched OFF the q uiescent current drain from the input p ower supply is less than 100 mA which c an allow continuous connection to a bat tery power source The LM1950 will drive all types of resistive or reactive loa ds To obtain a rapid decay time of the energy in inductive loads the output is internally protected but not clamped a nd can swing below ground to at least 5 4V negative with respect to the input p ower supply voltage The ON OFF input ca n be driven with standard 5V TTL or CMO S compatible logic levels independent o f the VCC supply voltage used Built in protection features incl.
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