LM1950 Datasheet | National Semiconductor

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 m A 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 m A 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 respect to the input power supply voltage The ON OFF input can be driven with standard 5V TTL or CMOS patible logic levels independent of the VCC supply voltage used Built in protection features include short circuit protection thermal shutdown over-voltage shutdown to protect load circuits and protection against reverse polarity 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 m A continuous output drive current Y Less than 100 m A 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 patible 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 Absolute Maximum Ratings (Note 1) If Military...