l9473 STMicroelectronics, l9473 Datasheet - Page 5

• Manufacturer Part Number: l9473
• Description: Car Alternator Voltage Regulator
• Manufacturer: STMicroelectronics

Figure 6. Set-Point Voltages vs. Mounting Tab Temperature (TS-Open)
Table 6. DIAGNOSTIC (Tcase = -35°C to +150°C unless otherwise specified)
Table 7. FAULT INDICATION TABLE
V
Initial KEY-ON Bulb and Wiring Check (Lamp ON for 1 sec ± 15% after initial KEY-ON)
V
V
F
No Connection Between Battery and V
At Start: Lamp ON until F
Symbol
T
GO
P
V
L-SAT-BO
V
P
DELAY
V
V
L-SAT
L-RLY
< V
< F
OV
UV
> V
2. This condition can happen when the connection between the battery and VGO or the output terminal of the generator is broken.
3. When no fault is detected the Lamp terminal is pulled up by ASVR.
P-TR
P-F
The 1.1 second delay is not required, and current is sinked by ASVR.
OV
AND V
Over-Voltage
Under-Voltage
Lamp ON Saturation Voltage
Lamp ON Voltage
Lamp OFF (Relay Drive)
Saturation Voltage (vs. B+)
Fault Indication Delay Time
@ V
P-TR
GO
< V
Parameter
SP
P
>F
2
P-IR
15.0
15.0
14.8
14.8
14.6
14.6
14.4
14.4
14.2
14.2
14.0
14.0
13.8
13.8
13.6
13.6
13.4
13.4
13.2
13.2
13.0
13.0
AND V
-40
-40
14.73
14.73
14.12
14.12
GO
-20
-20
P
>V
Conditions
P-F
F
S_term and V
I
I
35°C to 85°C
I
3
Delay before Lamp ON
0
0
L
L
L
P
= 0.5A (sinked by ASVR)
< 0.5A, VGO = Open; T
= 750mA (Sourced by ASVR)
. i.e. until V
Tcase < 125C
> F
20
20
14.63
14.63
14.00
14.00
P-LRC
40
40
Conditions
, 10kohm between
Temp
Temp
GO
P
60
60
reaches 8V.
80
80
100
100
case
= -
120
120
13.78
13.78
14.43
14.43
>V
V
140
140
10.95
Min.
SP
0.9
L-ACT
+ 1
160
160
V
Typ.
1.33
1.3
3.8
1.1
SP
+
V
Max.
SP
11.8
1.45
1.85
1.3
5
+ 2
T
Delay
Yes
Yes
Yes
No
No
No
L9473
Units
?
V
V
V
V
V
s
5/9