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L9915B Datasheet(PDF) 13 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) 13 Page - STMicroelectronics

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DocID027541 Rev 1
13/20
L9915B
Electrical specification
19
3.3.3
Pin ‘FM’
Figure 8. Pin ‘FM’ circuit and waveform
3.3.4
Pin ‘PH’
Table 8. Electrical characteristics - Pin ‘FM’
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
VMLVS
Low voltage
saturation
I-sink = 7 mA
0.9
1.2
1.5
V
fMSW
Field monitor
frequency switch
option
Direct field
212.5
250
287.5
Hz
DMDCR
Field monitor duty
cycle range
-5
-
95
%
IMlim
Field monitor
current limitation
-25
50
75
mA
Table 9. Electrical characteristics - Pin ‘PH’
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
VPHTh
High voltage threshold of hysteresis
input buffer
-
300
375
450
mV
VPLTh
Low voltage threshold of hysteresis
input buffer
-
225
275
325
mV
RPpd
Pull-down resistor
-
7
15
22
kΩ
TPSR
Spike rejection time
-
70
125
180
μs
IPpull-dw Pull-down current
-
1.5
2
3.5
mA
fPHPrex
High frequency threshold to exit pre-
excitation
-
102
120
138
Hz
fPHYS
Frequency hysteresis
-
10
20
30
Hz
fPLPrex
Low frequency threshold to enter pre-
excitation
-fPHPrex - fPHYS
Hz



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