Low-Dropout System Voltage Regulator With Keep-Alive ON/OFF Control

The LM9074 is a 5V, 3% accurate, 180 mA NPN voltage Regulator The Regulator features an active low delayed reset output flag which CAN be used to reset a Microprocessor system on turn-ON and in the event that the Regulator output falls out of regulation for any reason. An external capacitor programs a delay time interval before the reset output CAN return high.
Designed for automotive application the LM9074 contains a variety of protection features such as reverse battery, over-voltage shutdown, thermal shutdown, input transient protection and a wide operating temperature range.
A unique two-input Logic control scheme is used to enable or disable the Regulator output. An ON/OFF input CAN be provided by an ignition Switch derived signal while a second, Keep-Alive input, is generated by a system controller. This allows for a system to remain ON after ignition has been switched OFF. The system controller CAN then execute a power-down routine and after which command the Regulator OFF to a low quiescent current state (60 ?A max).
Design techniques have been employed to allow the Regulator to remain operational and not generate false reset signals when subjected to high levels of RF energy (300V/m from 2 MHz to 400 MHz).
By National Semiconductor Corporation
LM9074 's PackagesLM9074 's pdf datasheet

LM9074 Pinout, Pinouts
LM9074 pinout,Pin out
This is one package pinout of LM9074,If you need more pinouts please download LM9074's pdf datasheet.

LM9074 Application circuits
LM9074 circuits
This is one application circuit of LM9074,If you need more circuits,please download LM9074's pdf datasheet.

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