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STMicroelectronics Electronic Components Datasheet

L4969 Datasheet

SYSTEM VOLTAGE REGULATOR WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER

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L4969 pdf
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.
1/35


STMicroelectronics Electronic Components Datasheet

L4969 Datasheet

SYSTEM VOLTAGE REGULATOR WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER

No Preview Available !

L4969 pdf
L4969
Figure 2. Pin Connection
GND
V1
V2
V3
VS
CANH
RTL
CANL
RTH
GND
PSO20
GND
WAKE
NINT
NRES
SCLK
SIN
SOUT
TXD
RXD
GND
SCLK
NRES
NINT
WAKE
GND
GND
V1
V2
V3
VS
SO20
SIN
SOUT
TX
RX
GND
GND
RTH
CANL
RTL
CANH
Table 1. Pin Functions
Pin No. (PSO20)
Pin No. (SO20)
1, 10, 11, 20
5,6, 15, 16
27
38
49
5 10
6 11
7 12
8 13
9 14
12 17
13 18
14 19
15 20
16 1
17 2
18 3
19 4
Pin Name
GND
V1
V2
V3
VS
CANH
RTL
CANL
RTH
RXD
TXD
SOUT
SIN
SCLK
NRES
NINT
WAKE
Function
Power Ground
Microcontroller Supply Voltage
Peripheral Supply Voltage
Internal CAN Supply
Power Supply
CANH Line Driver Output
CANL Termination Source
CANL Line Driver Output
CANH Termination Source
Act. Low CAN Receive Dominant Data Output
Act. Low CAN Transmit Dominant Data Input
Serial Data Output
Serial Data Input
Serial Clock
Act. Low Reset Output
Act. Low Interrupt Request
Dual Edge Triggerable Wakeup Input
Table 2. Thermal Data
Symbol
Parameter
Rthj-amb Thermal resistance junction-ambient
Rthj-case Thermal resistance junction-case
Note: 1. Typical value soldered on a PC board with 8 cm2 copper ground plane (35µm thick).
Value
401)
3
Unit
°C/W
°C/W
2/35


Part Number L4969
Description SYSTEM VOLTAGE REGULATOR WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER
Maker STMicroelectronics
Total Page 30 Pages
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