L487

The L487 has 7 features.The first one is precise output voltage(5V±4%).The second one is very low dropout voltage.The third one is output current in excess of 500mA.The fourth one is power-on,power-off information(reset function).The fifth one is +80/-80V load dump protection.The sixth one is overvoltage and reverse voltage protection.The seventh one is short circuit protection and thermal shut-down.

The L487 is a monolithic integrated circuit in pentawatt package specially designed to provide a stabilized supply voltage for automotive and industrial electronic system.Thanks to its very low voltage drop,in automotive applications the L487 can work correctly even during the cranking phase,when the battery voltage could fall as low as 6V.Furthermore,it incorporates a complete range of protection circuits against the dangerous overvoltages always present on the battery rail of the car.The reset function makes the device particularly suited to supply microprocessor based systems:a pulse is available (after an externally programmable delay) to reset the microprocessor at power-on phase;at power-off,this pulse becomes low inhibiting the microprocessor.

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