L4949

Order this document from L4949/D Advanced Information Multifunction Very Low Dropout Voltage Regulator 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. Operating DC Supply Voltage Range 5.0 V to 28 V L4949 MULTIFUNCTION VERY LOW DROPOUT VOLTAGE REGULATOR SILICON MONOLITHIC INTEGRATED CIRCUIT 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 8 1 N SUFFIX PLASTIC PACKAGE CASE 626 8 1 D SUFFIX PLASTIC PACKAGE CASE 751 Representative Block Diagram Output Voltage (Vout) VZ 3 8 Supply Voltage (VCC) 1 Preregulator 6.0 V CT 4 PIN CONNECTIONS VCC 1 2.0 µA Reset 6 + – Reset 8 7 6 5 Vout So Reset Gnd Si VZ CT 2 3 4 Regulator Sense Input (Si) 2 Vs 2.0 V Sense Output (So) 7 (Top View) + – 1.23 Vref Sense 1.23 V ORDERING INFORMATION Device Operating Temperature Range TJ = –40° to +125°C Package DIP–8 SO–8 Rev 0 5 Gnd L4949N L4949D This document contains information on a new product. Specifications and informatio...