L4969 Datasheet PDF - STMicroelectronics
| Part Number | L4969 | |
| Description | SYSTEM VOLTAGE REGULATOR WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER | |
| Manufacturers | STMicroelectronics | |
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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
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L4969
Table 4. Electrical Characteristics (continued)
VS = 14V, Tj = -40°C to 150°C unless otherwise specified.
Symbol
tWDswS
Parameter
Watchdog window start
(Software window Watchdog)
tWDswE
Watchdog window end
(Software window watchdog)
tWD1C System Watchdog 1
tWD2C System Watchdog 2
VRESL Reset output LOW voltage
RPURES Internal Reset Pull-Up
Resistance
CAN Line Interface
tdrd Propagation delay
(rec to dom state)
tddr Propagation delay
(dom to rez state)
SRD Bus output slew rate (r -> d)
RRTH, RRTL external Termination
resistance
(application limit)
VCCFS
Force Standby mode (fail
safe)
VHRXD
High level output voltage on
RXD
VLRXD
Low level output voltage on
RXD
Vd_r
Vr_d
Differential receiver
dom to rec threshold
VCANH - VCANL
Differential receiver
rez to dom threshold
VCANH - VCANL
Test Conditions
SWT = 0 (2.5ms)
SWT = 1 (5ms)
SWT = 2 (10ms)
SWT = 3 (20ms)
SWT = 0 (5ms)
SWT = 1 (10ms)
SWT = 2 (20ms)
SWT = 3 (40ms)
WDT = 0 (80ms)
WDT = 1 (160ms)
WDT = 2 (320ms)
WDT = 3 (640ms)
WDT = 4 (800ms)
WDT = 8 (1s)
WDT = 9 (2s)
WDT = 10 (4s)
WDT = 11 (8s)
WDT = 12 (45min)
IRES = 500u, V1 = 2.5V
IRES = 500u, V1 = 1.5V
Cload = 3.3n
Cload = 3.3n,
RTERM =100
10% ... 90%
CLoad = 3.3n
min VS to turn off CAN-IF and
V3
No bus failures
No bus failures
Min.
0
0
80
Typ.
1
2
4
8
2
4
8
16
32
64
128
256
320
400
784
1600
3200
1081344
0.3
0.85
120
Max.
0.4
1.4
280
0.4 1.0 1.5
0.4 1.0 2.0
458
0.5 16
2.20
V1 - 0.9
0
-3.85
4.0
V1
0.9
-2.50
-3.50
-2.20
Unit
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
tWDC
V
V
KΩ
µs
µs
V/µs
KΩ
V
V
V
V
V
5/35
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for L4969 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ L4969.PDF Datasheet ] | |
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