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L4969
August 2003
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
s
OPERATING SUPPLY VOLTAGE 6V TO 28V,
TRANSIENT UP TO 40V
s
LOW QUIESCENT CURRENT CONSUMP-
TION, LESS THAN 40
A 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
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EFFICIENT UC SUPERVISION AND RESET
LOGIC
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24 BIT SERIAL INTERFACE
s
AN UNPOWERED OR INSUFFICIENTLY
SUPPLIED NODE DOES NOT DISTURB THE
BUS LINES
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VS VOLTAGE SENSE COMPARATOR
s
SUPPORTS TRANSMISSION WITH
GROUNDSHIFT:
SINGLE WIRE: 1.5V, DIFFERENTIAL: 3V
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.
SO20
PowerSO20
ORDERING NUMBERS: L4969MD (SO20)
L4969 (PowerSO20)
PRELIMINARY DATA
SYSTEM VOLTAGE REGULATOR
WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER
Figure 1. Block Diagram
VREG 1
VREG 2
VREG 3
Fault tolerant
low speed
CAN-transceiver
24 Bit SPI
Control and Status Memory
Identifier Filter
Watchdog and
adjustable RC-Oscillator
VS
V1
V2
V3
CANH
CANL
RTH
RTL
TX
RX
SCLK
SIN
SOUT
WAKE
NINT
NRESET
L4969
2/35
Figure 2. Pin Connection
Table 1. Pin Functions
Table 2. Thermal Data
Note: 1. Typical value soldered on a PC board with 8 cm
2
copper ground plane (35
m thick).
Pin No. (PSO20)
Pin No. (SO20)
Pin Name
Function
1, 10, 11, 20
5,6, 15, 16
GND
Power Ground
2
7
V1
Microcontroller Supply Voltage
3
8
V2
Peripheral Supply Voltage
4
9
V3
Internal CAN Supply
5
10
VS
Power Supply
6
11
CANH
CANH Line Driver Output
7
12
RTL
CANL Termination Source
8
13
CANL
CANL Line Driver Output
9
14
RTH
CANH Termination Source
12
17
RXD
Act. Low CAN Receive Dominant Data Output
13
18
TXD
Act. Low CAN Transmit Dominant Data Input
14
19
SOUT
Serial Data Output
15
20
SIN
Serial Data Input
16
1
SCLK
Serial Clock
17
2
NRES
Act. Low Reset Output
18
3
NINT
Act. Low Interrupt Request
19
4
WAKE
Dual Edge Triggerable Wakeup Input
Symbol
Parameter
Value
Unit
R
thj-amb
Thermal resistance junction-ambient
40
1)
C/W
R
thj-case
Thermal resistance junction-case
3
C/W
NINT
WAKE
GND
GND
V1
V2
V3
VS
CANH
RTL
CANL
RTH
RX
GND
GND
TX
SOUT
SIN
SCLK
NRES
SO20
GND
V1
V2
V3
VS
CANH
RTL
CANL
RTH
GND
GND
WAKE
NINT
NRES
SCLK
SIN
SOUT
TXD
RXD
GND
PSO20
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L4969
Table 3. Absolute Maximum Ratings
Notes: 1. All pins of the IC are protected against ESD. The verification is performed according to MIL 883C,
human body model with R = 1.5kW, C = 100pF and discharge voltage 2000V,
corresponding to a maximum discharge energy of 0.2mJ..
2. Voltage forced means voltage limited to the specified values while the current is not limited.
3. ESD Pulses on CAN-Pins up to 4KV HBM vs GND with all other Pins grounded.
Symbol
Parameter
Value
Unit
V
VSDC
DC operating supply voltage
-0.3 ... +28
V
VSDC
V
VSTR
Transient operating supply voltage (T < 400ms)
-0.3 ... +40
V
VSTR
I
VOUT1...3
Output currents
Internally limited
I
VOUT1...3
T
STG
Storage temperature
-65 ... +150
T
STG
T
J
Operating junction temperature
-40 ... +150
T
J
V
OUT1
Externally forced output voltage OUT1
-0.3 ... VS+0.3, max +6.3
V
OUT1
V
OUT2
Externally forced output voltage OUT2
-0.3 ... VS+0.3
V
OUT2
V
OUT3
Externally forced output voltage OUT3
-0.3 ... VS+0.3, max +6.3
V
OUT3
V
inli
Input voltage Logic inputs: SIN, SCLK, NRES
-0.3 ... +7
V
inli
V
inliW
Input voltage WAKE
-0.3 ... VS+0.3
V
inliW
V
canh
Voltage CANH line
3
-28 ... +40
V
canh
V
canl
Voltage CANL line
3
-28 ... +40
V
canl
Table 4. Electrical Characteristics
V
S
= 14V, T
j
= -40C to 150C unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Supply Current
I
SSL
All Regulators off
(CANH Standby
Timer off (Sleep #1)
30
40
60
A
Timer on (Sleep #2)
70
90
135
A
I
SSLWK
V1 off, V2 off, V3 on
(CAN RX only)
RXonly
4
6
mA
I
SSB
V1 only (CAN Standby)
Timer off (Standby #1)
150
250
A
Timer on (Standby #2)
200
300
A
Default (Standby #3)
440
600
A
I
S
All Regulators on,
(CAN active, TX high)
I
OUT1
= -100mA
I
OUT2
= -10mA
No CAN load.
120
150
mA
I
SCP
Additional Oscillator- and
Chargepumpcurrent at low VS
V
S
= 6V; Timer Off
55
80
100
A
V
S
= 6V; Timer On
10
30
50
A
Voltage Regulator 1
V
01
V1 output voltage
6V < V
S
< 28V
I
O
>-100mA
SO20 Package
4.9
5
5.1
V
6V < V
S
< 28V
I
O
>-150mA
PSO20 Package
4.9
5
5.1
V
V
DP1
Dropout voltage 1@ VS=4.8V
I
OUT1
= -10mA
0.0
0.025
0.06
V
I
OUT1
= -100mA
SO20 Package
0.0
0.25
0.6
V
I
OUT1
= -150mA
PSO20 Package
0.0
0.4
0.9
V
L4969
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V
OL01
Load regulation 1
I
O
=-1mA to-100mA
SO20 Package
0
10
40
mV
I
O
=-1mA to -150mA
PSO20 Package
0
10
40
mV
I
LIM1
Current limit 1
0.8V < V
O1
< 4.5V, V
S
=6V,
SO20 Package
-180
-400
-800
mA
0.8V < V
O1
< 4.5V
V
S
=14V,
PSO20 Package
-180
-400
-800
mA
V
OLI1
Line regulation 1
6V < V
S
< 28V
I
O1
= -1mA
0
5
30
mV
T
OVT1
Overtemp flag 1
6V < V
S
< 28V
130
140
150
C
T
OTKL1
Thermal shutdown 1
6V < V
S
< 28V
175
185
205
C
V
res
Min V1 reset threshold voltage RTC0 = 0
4.15
4.5
4.7
V
RTC0 = 1
3.7
4.0
4.2
V
Voltage Regulator 2 and 3
V
O
Output voltage
6V < V
S
< 28V
I
O
>-100mA
SO20 Package
4.8
5
5.2
V
6V < V
S
< 28V
I
O
>-150mA
PSO20 Package
4.8
5
5.2
V
V
DP
Dropout voltage
VS = 4.8V
I
O UT
= 100mA
SO20 Package
0.0
0.25
0.6
V
I
O UT
= 150mA
PSO20 Package
0.0
0.4
0.9
V
V
OLO
Load regulation
I
O
=-1mA to -100mA
SO20 Package
0
10
40
mV
I
O
=-1mA to -150mA
PSO20 Package
0
10
40
mV
I
LIM
Current limit
0.8V < V
O1
< 4.5V, VS=6V,
SO20 Package
-180
-400
-800
mA
0.8V < V
O1
< 4.5V
PSO20 Package
-180
-400
-800
mA
V
OLI
Line regulation
6V < V
S
< 28V
I
OUT
= -5mA
0
5
30
mV
T
OVT
Overtemp flag
6V < V
S
< 28V
130
140
150
C
T
OTKL
Thermal shutdown
6V < V
S
< 28V
150
165
180
C
Vtrc
V2 tracking offset
6V < VS < 28V, I
O2
= 0
-90
0
+90
mV
Reset and Watchdog
t
OSC
OnChip RC-Timebase
RC-Adjustment = 0
0.95
1.1
1.35
us
t
WDC
Watchdog timebase (2.5ms)
2498
t
OSC
t
RDnom
Reset pulse duration (1ms)
1024
t
OSC
t
WDstart
Reset pulse pause (320ms)
(startup watchdog)
128
t
WDC
Table 4. Electrical Characteristics (continued)
V
S
= 14V, T
j
= -40C to 150C unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
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L4969
t
WDswS
Watchdog window start
(Software window Watchdog)
SWT = 0 (2.5ms)
1
t
WDC
SWT = 1 (5ms)
2
t
WDC
SWT = 2 (10ms)
4
t
WDC
SWT = 3 (20ms)
8
t
WDC
t
WDswE
Watchdog window end
(Software window watchdog)
SWT = 0 (5ms)
2
t
WDC
SWT = 1 (10ms)
4
t
WDC
SWT = 2 (20ms)
8
t
WDC
SWT = 3 (40ms)
16
t
WDC
t
WD1C
System Watchdog 1
WDT = 0 (80ms)
32
t
WDC
WDT = 1 (160ms)
64
t
WDC
WDT = 2 (320ms)
128
t
WDC
WDT = 3 (640ms)
256
t
WDC
WDT = 4 (800ms)
320
t
WDC
t
WD2C
System Watchdog 2
WDT = 8 (1s)
400
t
WDC
WDT = 9 (2s)
784
t
WDC
WDT = 10 (4s)
1600
t
WDC
WDT = 11 (8s)
3200
t
WDC
WDT = 12 (45min)
1081344
t
WDC
V
RESL
Reset output LOW voltage
I
RES
= 500u, V1 = 2.5V
0
0.3
0.4
V
I
RES
= 500u, V1 = 1.5V
0
0.85
1.4
V
R
PURES
Internal Reset Pull-Up
Resistance
80
120
280
K
CAN Line Interface
t
drd
Propagation delay
(rec to dom state)
C
load
= 3.3n
0.4
1.0
1.5
s
t
ddr
Propagation delay
(dom to rez state)
C
load
= 3.3n,
R
TERM
=100
0.4
1.0
2.0
s
S
RD
Bus output slew rate (r -> d)
10% ... 90%
C
Load
= 3.3n
4
5
8
V/
s
R
RTH
, R
RTL
external Termination
resistance
(application limit)
0.5
16
K
V
CCFS
Force Standby mode (fail
safe)
min V
S
to turn off CAN-IF and
V3
2.20
4.0
V
VH
RXD
High level output voltage on
RXD
V1 - 0.9
V1
V
VL
RXD
Low level output voltage on
RXD
0
0.9
V
Vd_r
Differential receiver
dom to rec threshold
V
CANH
- V
CANL
No bus failures
-3.85
-2.50
V
Vr_d
Differential receiver
rez to dom threshold
V
CANH
- V
CANL
No bus failures
-3.50
-2.20
V
Table 4. Electrical Characteristics (continued)
V
S
= 14V, T
j
= -40C to 150C unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
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