L4949E

L4949E Multifunction very low drop voltage regulator Features ■ Operating DC supply voltage range 5 V - 28 V ■ Transient supply voltage up to 40V ■ Extremely low quiescent current in standby ) mode t(s ■ High precision standby output voltage 5V±1% uc ■ Output current capability up to 100mA d ■ Very low dropout voltage less than 0.5V ro ■ Reset circuit sensing the output voltage P ■ Programmable reset pulse delay with external te capacitor le ■ Voltage sense comparator so ■ Thermal shutdown and short circuit protections - Ob Description t(s) The L4949E is a monolithic integrated 5V voltage regulator with a very low dropout output and c additional functions as power-on reset and input du voltage sense. It is designed for supplying the ro microcomputer controlled systems especially in Obsolete P automotive applications. SO-8 SO-20W (12+4+4) Table 1. Device summary Package Order codes Tube Tape and reel SO-8 L4949ED L4949ED013TR SO-20W L4949EP L4949EP013TR November 2009 Doc ID 4275 Rev 6 1/19 www.st.com 1 Contents Contents L4949E 1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 Electri...