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L9177ATR Datasheet(PDF) 37 Page - STMicroelectronics

Part # L9177ATR
Description  Automotive engine management control IC for small engines
PDF  55 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9177ATR Datasheet(HTML) 37 Page - STMicroelectronics

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Table 31. Peak voltage detector precision
Pick voltage [PV]
Value
Unit
Min.
Typ.
Max.
PV1
850
900
950
mV
PV2
1452
1560
1638
mV
PV3
2118
2230
2341
mV
PV4
2755
2900
3045
mV
Table 32. Hysteresis threshold precision
Pick voltage [PV]
Value
Unit
Min.
Typ.
Max.
H0
70
100
130
mV
HV1
140
200
220
mV
HV2
250
347
390
mV
HV3
490
644
720
mV
HV4
730
1000
1120
mV
Note:
Hysteresis voltages are achieved by injecting an hysteresis bias current on V RIN± external resistors (typ. 10 kΩ
each, see Figure 38). The resulting HV voltage is HV = I_hys * Rtyp. Changing the value of R the hysteresis
value would change in a linear mode.
L9177A
VRS interface
DS12175 - Rev 5
page 37/55



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