L4943 Datasheet | STMicroelectronics

® MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO 3 PROGRAMMABLE OUTPUTS: 3 TO 11V (500mA); 3 TO 11V (500mA); 3 TO 7V (500mA) STANDBY OUT1 AND OUT2 WITH INDEPENDENT ENABLE CONTROL FOR STAND-BY MODE 0.4A HIGH SIDE DRIVER LOAD DUMP PROTECTION THERMAL SHUTDOWN - - - DESCRIPTION The L4943 contains a triple voltage regulator and a high side driver. In stand-by the output is active as long as possible even when in thermal shutdown or under any other fault conditions. The STCAP pin allows the use of a reserve supply capacitor that will hold enough energy for the BLOCK DIAGRAM Multiwatt 15 ORDERING NUMBER: L4943 5V Stand-by line to allow the µP to store data. FILTER CAP 11 GEN REF VMEM...