NCV4949

L4949, NCV4949 100 mA, 5.0 V, Low Dropout Voltage Regulator with Reset and Sense The L4949 is a monolithic integrated 5.0 V voltage regulator with a very low dropout and additional functions such as reset and an uncommitted voltage sense comparator. It is designed for supplying microcontroller/microprocessor controlled systems particularly 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 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 Voltage Sense Comparator Thermal Shutdown and Short Circuit Protections NCV Prefix for Automotive and Other Applications Requiring Site and Change Control These are Pb−Free Devices Supply Voltage (VCC) 1 Output Voltage (Vout) VZ 3 8 CT 4 Preregulator 6.0 V 2.0 mA Sense Input (Si) 2 Regulator Vs 1.23 Vref Reset + - 2.0 V + Sense 1.23 V 5 GND Figure 1. Representative Block Diagram Reset 6 Sense Output (So) 7 http://onsemi.com 8 1 8 1 8 1 MARKING DIAGRAMS 8 PDIP−8 N SUFFIX CASE 626 L4949N AWL YYWWG 1 8 SOIC−8 D SUFFIX CASE 751 L4949 ALYWD G 1 8 SOIC−8 EP PD SUFFIX CASE 751AC V4949 ALYWG G 1 20 20 1 SOIC−20W DW SUFFIX CASE 751D L4949DW AWLYYWWG 1 A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week G or G = ...