The L4949 is a monolithic integrated 5.0 V voltage regulator with a very low dropout and additional functions such as power−on reset and input voltage sense.

It is designed for supplying the micro−computer controlled systems especially in automotive applications.

Features

• Operating DC Supply Voltage Range 5.0 V to 28 V

• Transient Supply Voltage Up to 40 V

• Extremely Low Quiescent Current in Standby Mode

• High Precision Standby Output Voltage 5.0 V ±1%

• Output Current Capability Up to 100 mA

• Very Low Dropout Voltage Less Than 0.4 V

• Reset Circuit Sensing The Output Voltage

• Programmable Reset Pulse Delay With External Capacitor

• Voltage Sense Comparator

• Thermal Shutdown and Short Circuit Protections

• NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes

• Pb−Free Packages are Available