L5951

L5951 TRIPLE OUTPUT MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO WITH IDR/CLASS 2 INTERFACE s s s s s s s s s s s 3 VOLTAGE REGULATORS: 3.3V (100mA) STANDBY REGULATOR 5V (100mA) STANDBY REGULATOR 7.8V (100mA) OUT OF REGULATION DETECTION FOR 5VSTANDBY REGULATOR WIDE OPERATING SUPPLY VOLTAGE RANGE FROM 4.5V UP TO 26.5V FOR TRANSIENT 34V VERY LOW STANDBY QUIESCENT CURRENT (<150µA) INPUT TO OUTPUT SIGNAL TRANSFER FUNCTION PROGRAMMABLE LVS FUNCTION TTL AND CMOS COMPATIBLE INPUTS OUTPUT CURRENT LIMITATION CONTROLLED OUTPUT SLOPE FOR LOW EMI OVERTEMPERATURE SHUT-DOWN ABLE TO SURVIVE UNDER LOSS OF SO24 ORDERING NUMBER: L5951 s GROUND OR BATTERY ESD PROTECTED DESCRIPTION The L5951 is a monolithic triple regulator integrated with a SAE J1850 Integrated Driver / Receiver realized in advanced Multipower-BCD technology. It is intended to drive single wire J1850 communications, and offer microcontroller power and power management for automotive or industrial applications. BLOCK DIAGRAM VBAT SUPPLY SELECTOR LVS 3V STANDBY REG1 BANDGAP REFERENCE 5V STANDBY REG2 RESET EN SLEEP ENABLE/ PROTECTION LOGIC RESET 7.8V REG3 BUS DRIVER BUS TX WAVESHAPING FILTER 4X LOOP 4XEN AND LOOPBACK LOSS OF GND PROTECTION LOAD RX DIGITAL OUTPUT DRIVER GND D99AU991 January 2001 1/13 L5951 1 FUNCTIONAL DESCRIPTION 1.1 General Features The L5951 is an integrated circuit which provides a J1850 physical layer as well three voltage regulators. The L5951 was developed to provide the power ...