this is information on a product in full production. september 2013 doc id 13517 rev 8 1/32 1 l4993 low drop voltage regulator datasheet ? production data features operating dc supply voltage range 5.6v to 31v reset circuit sensing the output voltage down to 1v programmable reset pulse delay with external capacitor watchdog programmable watchdog timer with external capacitor enable input for en abling/disabling the watchdog functionality thermal shutdown and short circuit protection wide temperature range (t j = -40c to 150c) description the l4993 is a monolithic integrated 5v voltage regulator with a low drop voltage at currents up to 150 ma.the output voltage regulating element consists in a p-channel mos and the regulation is performed regardless of input voltage transients up to 40v. the high precision of the output voltage is obtained with a pre-trimmed reference voltage. the l4993 is protected against short circuit and an over-temperature protection switches off the device in case of extremely high power dissipa- tion. the l4993 watchdog is active when the enable is high. state of the art features like reset and watchdog make this device particularly suitable to supply micr oprocessor systems in automotive applications. max dc supply voltage v s 40v max output voltage tolerance ? v 0 +/-2% max dropout voltage v dp 400 mv output current i 0 150 ma quiescent current i qn 79 a (1) 1. typical value wi th watchdog disabled. ' ! 0 ' # & |