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L9915B Datasheet(PDF) 15 Page - STMicroelectronics

Part # L9915B
Description  C-terminal alternator voltage regulator (CTAVR)
PDF  20 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9915B Datasheet(HTML) 15 Page - STMicroelectronics

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DocID027541 Rev 1
15/20
L9915B
Electrical specification
19
3.3.6
Pin ‘L’
VFONdet
Voltage threshold
on-state detection
Figure 10 on page 16
0.9
1.1
1.3
V
fFSW
Field switching frequency
-
212.5
250
287.5
Hz
TFrise
Field voltage rise time
-
5
-
25
μs
TFfall
Field voltage fall time
-
5
-
25
μs
DFPreex Field duty cycle in pre-excitation -
11
12.5
14
%
DFSS
Field duty cycle in self start
-
4
6
8
%
DFef
Field duty cycle during
excitation FIXED
-
345
%
TFLRCUP
Load response control time
(0 % to 100 % DC)
--
0
-
s
TFSDT
Start delay time in internal mode
only
--
0
-
s
Table 10. Electrical characteristics - Pin ‘F’ (continued)
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Table 11. Electrical characteristics - Pin ‘L’
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
VLsat
Lamp driver
saturation voltage
VB = 12.5 V; Isunk = 0.5 A
1
1.2
1.4
V
VLsatSB
Lamp driver
saturation voltage in
self bias condition
B pin floating; Isunk = 300 mA
1
-
4
V
RLpulldw Pull down resistor
-
2
4
8.2
kΩ
VLHTh
High voltage
threshold key-ON
detector
-
0.8
0.9
1
V
VLLTh
Low voltage
threshold key-on
detector
-
0.7
0.8
0.9
V
ILlim
Over-current
limitation
-
1
1.5
2
A
TLOC
Maximum time
duration of linear
current limitation
See Figure 11 on page 16
25
30
35
ms
TLretry
Retry time in case of
over-current
duration > TLOC
510
600
690
ms
TLdelay
Turn on delay time
-
-
-
100
μs
TLalarm
Alarm validation
time
-
380
440
500
ms



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