L4936E STMicroelectronics

L4936E ADVANCED VOLTAGE REGULATOR ENABLE AND SENSE INPUTS (EN, SI) PRO- TECTED AGAINST NEGATIVE TRANSIENTS DOWN TO -5V RESET THRESHOLD ADJUSTABLE FROM 3.8 TO 4.7V EXTREMELY LOW QUIESCENT CURRENT, 65A (LESS THAN 90A) IN STANDBY MODE OPERATING DC SUPPLY VOLTAGE RANGE MULTIWATT 15 MULTIWATT 11 5V - 28V OPERATING TRANSIENT SUPPLY VOLT- AGE UP TO 40V HIGH PRECISION STANDBY OUTPUT VOLT- ORDERING NUMBERS: L4936E (Multiwatt 11) AGE 5V 1% WITH 100mA CURRENT CA- L4936EH (Multiwatt 15) PABILITY OUTPUT 2 VOLTAGE 5V 2% WITH 400mA CURRENT CAPABILITY (ADJ WIRED TO DESCRIPTION V ) OUT2 The L4936E is a monolithic integrated dual volt- OUTPUT 2 VOLTAGE ADJUSTABLE BY EX- age regulator with two very low dropout outputs TERNAL VOLTAGE DIVIDER and additional functions as power-on reset and in- OUTPUT 2 DISABLE FUNCTION FOR put voltage sense. It is designed for supplying the STANDBY MODE microcomputer controlled systems especially in automotive applications. PIN CONNECTIONS (Top views) 15 OUT2 14 ADJ 11 OUT2 13 OUT1 10 ADJ 12 SO 9 OUT1 11 N.C. 8 SO 10 N.C. 7 RES 9 RES 6 GND 8 GND 5 EN 7 EN 4 CT 6 N.C. 5 CT 3 PR 4 PR 2 SI 3 SI 1 VS1/VS2 2 VS1 1 VS2 TAB CONNECTED TO PIN 6 D94AT077 TAB CONNECTED TO PIN 6 D94AT078A Multiwatt15 Multiwatt11 1/11 June 2000 Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) L4936E ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V DC Operating Supply Voltage 28 V INDC V Transient Operating Supply Voltage (T < 400ms) -14 to 40 V INTR I Output Current internally limited O V Sense Input Voltage (Voltage Forced) (note 2) -20 to 20 V SI I Sense Input Current (Current Forced) (note 2) 1mA SI V Enable Input Voltage (Voltage Forced) (note 2) -20 to 20 V EN I Sense Input Current (Current Forced) (note 2) 1mA EN V , V Output Voltages -0.3 to 20 V RES SO I , I Output Currents (Output Low) 5 mA RES SO P Power Dissipation at T = 80C (note 3) 5W O amb Multiwatt 11 (R heatsink = 9K/W) th T Storage Temperature -65 to 150 C stg T Operating Junction Temperature -40 to 150 C j T Thermal shutdown junction temperature Output 2 will shut-down 165 C JSD typically at Tj 10K lower than output 1 Note: The circuit is ESD protected according to MIL-STD-883C Note 2: Current forced means voltage unlimited but current limited to the specified value Voltage forced means voltage limited to the specified valueswhile the current is not limited Note 3: Typical value soldered on a PC board with 8 cm2 copper ground plane (35mm thick) BLOCK DIAGRAM VS1 OUT1 1.23V REFERENCE REG1 VS2 OUT2 ADJ EN 1.23V REG2 1.23V CT RES PR 1.4V RESET SO SI 1.23V SENSE GND D94AT074A 2/11 Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s)