LM1951 Datasheet | National Semiconductor

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 supply open load current limit overvoltage or thermal shutdown The LM1951 will drive all types of resistive or inductive 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 patible logic input with hysteresis Switching times both turn on and turn off are 2 ms (Cload k 0 005 m F) In addition its quiescent current in the OFF state is typically less than 0 1 m A at room temperature and less than 10 m A 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 m A 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 k Hz) Inductive or resistive loads Low ON resistance (1X maximum) TTL CMOS patible 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 - 1 VIN 0 1 Output OFF ON TO-220 5-Lead TL H 9133 - 2 Front View Order Number LM1951T See NS Package Number T05A C1995 National Semiconductor Corporation TL H 9133 RRD-B30M115 Printed in U S A 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 26 VDC b 40 VDC t VCC s...