l9473 STMicroelectronics, l9473 Datasheet - Page 6

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

L9473
Table 8. REGULATION FEATURES
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Symbol
F
FSDC
V
F
V
F
I
LRC
P-LRC
IRD
L-PD
SS
P-TR
L-PD
P-IR
P-IR
I
P
L Terminal Regulator Activate
Threshold
L Terminal Pull Down Current
Initiate Regulation Phase Voltage
Threshold
Phase Terminal Current Sink
Initiate Regulation Phase
Frequency
Terminate Regulation Phase
Frequency
Initiate Regulation Delay
Field Strobe Duty Cycle
Load Response Control Rate
LRC Transition Frequency
Soft-Start
Parameter
VGO=12.6V
V
VGO=12.6V
Regulator Activated
V
VGO = 12.6V
Regulator Activated, V
F
Regulator Activated AND
(Regulation Terminated OR
Regulation NOT Initiated)
Field Drive Duty Cycle Increase
LRC Enabled if F
LRC enabled until V
regardless other conditions
P-IR
L
P
= V
> 1.5V and < 12.6V
Conditions Met First Time.
L-ACT
Conditions
P
< F
SP
P-IR
P-LRC
reached
AND
Min.
0.09
0.25
123
255
0.8
1.1
2.5
8.5
59
16
34
18.75
Typ.
145
300
1.3
72
10
40
1
3
Max.
1.15
0.78
11.5
167
345
1.5
3.5
3.5
86
22
46
Unit
%/s
%/s
mA
mA
Hz
Hz
Hz
%
V
V
s