TRIPLE OUTPUT MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO WITH IDR/CLASS 2 INTERFACE
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 ...
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 ...