L4969 Datasheet, PDF (1/35 Pages) STMicroelectronics – SYSTEM VOLTAGE REGULATOR WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER

L4969
SYSTEM VOLTAGE REGULATOR
WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER
PRELIMINARY DATA
s OPERATING SUPPLY VOLTAGE 6V TO 28V,
TRANSIENT UP TO 40V
s LOW QUIESCENT CURRENT CONSUMP-
TION, LESS THAN 40µA IN SLEEP MODE
s TWO VERY LOW DROP VOLTAGE
REGULATORS 5V / 200mA
AND 5V/200mA
s SEPARATE VOLTAGE REGULATOR FOR
CAN-TRANSCEIVER SUPPLY WITH LOW
POWER SLEEP MODE
s EFFICIENT UC SUPERVISION AND RESET
LOGIC
s 24 BIT SERIAL INTERFACE
s AN UNPOWERED OR INSUFFICIENTLY
SUPPLIED NODE DOES NOT DISTURB THE
BUS LINES
s VS VOLTAGE SENSE COMPARATOR
s 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
V3
VREG 3
Watchdog and
adjustable RC-Oscillator
Identifier Filter
NRESET
WAKE
RX
Control and Status Memory
NINT
TX
CANH
RTH
CANL
RTL
Fault tolerant
low speed
CAN-transceiver
24 Bit SPI
SCLK
SIN
SOUT
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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