Part # LM2984C datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM2984C Microprocessor Power Supply System

Part Details:

LM2984C May 1989 Microprocessor LM2984C Microprocessor Power Supply System General DescriptionThe LM2984C positive voltage regulator features three in- also provided Fixed outputs of 5V are available in the plas- dependent and tracking outputs capable of delivering the tic TO-220 power package power for logic circuits peripheral sensors and standbymemory in a typical microprocessor system The LM2984C Features includes circuitry which monitors both its own high-current Y Three low dropout tracking regulators output and also an external mP If any error conditions are Y Output current in excess of 500 mA sensed in either a reset error flag is set and maintained until Y Low quiescent current standby regulator the malfunction terminates Since these functions are in- Y Microprocessor malfunction RESET flag Power cluded in the same package with the three regulators agreat saving in board space can be realized in the typical Y Delayed RESET on power-up microprocessor system The LM2984C also features very Y Accurate pretrimmed 5V outputs low dropout voltages on each of its three regulator outputs Y Reverse battery protection (0 6V at the rated output current) Furthermore the quies- Y Overvoltage protection Supply cent current can be reduced to 1 mA in the standby mode Y Reverse transient protection Designed also for vehicular applications the LM2984C and Y Short circuit protection all regulated circuitry are protected from reverse battery in- Y Internal thermal overload protection stallations or 2-battery jumps Familiar regulator features Y ON OFF switch for high current outputs such as short circuit and thermal overload protection are Y 100% electrical burn-in in thermal limit System Typical Application Circuit LM2984C COUT must be at least 10 mF tomaintain stability May be increasedwithout bound to maintain regulationduring transients Locate as close aspossible to the regulator This capac- TL H 8821­1

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LM2984C.pdf Datasheet