L4969
SYSTEM VOLTAGE REGULATOR
WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER
PRELIMINARY DATA
s
s
s
s
s
s
s
s
s
OPERATING SUPPLY VOLTAGE 6V TO 28V,
TRANSIENT UP TO 40V
LOW QUIESCENT CURRENT CONSUMP-
TION, LESS THAN 40
碌
A IN SLEEP MODE
TWO VERY LOW DROP VOLTAGE
REGULATORS 5V / 200mA
AND 5V/200mA
SEPARATE VOLTAGE REGULATOR FOR
CAN-TRANSCEIVER SUPPLY WITH LOW
POWER SLEEP MODE
EFFICIENT UC SUPERVISION AND RESET
LOGIC
24 BIT SERIAL INTERFACE
AN UNPOWERED OR INSUFFICIENTLY
SUPPLIED NODE DOES NOT DISTURB THE
BUS LINES
VS VOLTAGE SENSE COMPARATOR
SUPPORTS TRANSMISSION WITH
GROUNDSHIFT:
SINGLE WIRE: 1.5V, DIFFERENTIAL: 3V
SO20
PowerSO20
ORDERING NUMBERS: L4969MD (SO20)
L4969 (PowerSO20)
DESCRIPTION
The L4969 is an integrated circuit containing 3 inde-
pendent Voltage Regulators and a standard fault tol-
erant low speed CAN line interface in multipower
BCD3S process.
It integrates all main local functions for automotive body
electronic applications connected to a CAN bus.
Figure 1. Block Diagram
VS
V1
VREG 1
V2
VREG 2
Watchdog and
adjustable RC-Oscillator
NRESET
Identifier Filter
V3
VREG 3
WAKE
RX
TX
CANH
RTH
CANL
RTL
Fault tolerant
low speed
CAN-transceiver
SCLK
24 Bit SPI
SIN
SOUT
Control and Status Memory
NINT
August 2003
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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