L4937NPD

® L4937NPD DUAL 5V MULTIFUNCTION VOLTAGE REGULATOR . . . . . . . . . . STANDBYOUTPUT VOLTAGEPRECISION 5V ± 2% OUTPUT 2 TRACKED TO THE STANDBY OUTPUT OUTPUT 2 DISABLE FUNCTION FOR STANDBY MODE VERY LOW QUIESCENT CURRENT, LESS THAN 260µA, IN STANDBY MODE OUTPUT CURRENTS : I01 = 50mA, I02 = 500mA VERY LOW DROPOUT (max 0.4V/0.6V) OPERATING TRANSIENT SUPPLY VOLTAGE UP TO 40V POWER-ON RESET CIRCUIT SENSING THE STANDBY OUTPUT VOLTAGE POWER-ON RESET DELAY PULSE DEFINED BY THE EXTERNAL CAPACITOR THERMAL SHUTDOWN AND SHORTCIRCUIT PROTECTIONS PowerSO20 ORDERING NUMBER: L4937NPD DESCRIPTION The L4937NPD is a monolithic integrated dual voltage regulators with two very low dropout outputs andadditionalfunctionssuchas power-onresetand input voltage sense. They are designed for supplying microcomputer controlled systems specially in automotive applications. PIN CONNECTION (top view) GND N.C. VS VS GND N.C. CT EN N.C. GND 1 2 3 4 5 6 7 8 9 10 D95AT162A 20 19 18 17 16 15 14 13 12 11 GND N.C. VO2 N.C. VO1 GND RESET N.C. N.C. GND June 2000 1/9 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. L4937NPD BLOCK DIAGRAM VS1 VO1 REFERENCE 1.23V REG1 VS2 EN REG2 VO2 1.23V 2µ CT RES RESET 2.0V GND D95AT163 THERMAL DATA Symbol Rthj-case Parameter Thermal Resistance Junction-Case Max. Value 1.5 Unit °C/W 2/9 L4937NPD ABSOLUTE MAXIMUM RATINGS Symbol VS Tj, Tstg IEN VEN VRES IRES PD DC Supply ...