Features: ·Automotive application reliability·3% output voltage tolerance·Insensitive to radiated RFI·Dropout voltage less than 2.5V with 180 mA output current·Externally programmed reset delay interval·Keep-alive feature with 2 logic control inputs·60V Load dump transient protection·Thermal shutd...
LM9074: Features: ·Automotive application reliability·3% output voltage tolerance·Insensitive to radiated RFI·Dropout voltage less than 2.5V with 180 mA output current·Externally programmed reset delay inte...
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The LM9074 voltage regulator has been optimized for use in microprocessor based automotive systems. Several unique design features have been incorporated to address many FMEA (Failure Mode Effects Analysis) concerns for fail-safe system performance.
Temperature Min | -40 deg C |
Temperature Max | 125 deg C |
Multiple Output Capability | No |
On/Off Pin | Yes |
Error Flag | Yes |
Input Min Voltage | 7.5 Volt |
Input Max Voltage | 40 Volt |
Output Current | 180 mA |
Output Min | 5 Volt |
Output Max | 5 Volt |
Watchdog | No |
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The LM9074 is a 5V, 3% accurate, 180 mA NPN voltage regulator.
The LM9074 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 µA 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).