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L9177ATR Datasheet(PDF) 19 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) 19 Page - STMicroelectronics

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Symbol
Parameter
Condition
Min
Typ
Max
Unit
Tdgc_step_OFF OFF Diagnostic Deglitch filter time Guaranteed by scan
93.8
125
156.3
µs
Tmask
Masking time
Guaranteed by scan
0.75
1
1.25
ms
Tdgc_step_ON ON Diagnostic Deglitch filter time
Guaranteed by scan
15
20
25
µs
1. VoutA < Vdiagth_H and VoutB > Vdiagth_Lor VoutC < Vdiagth_H and VoutD > Vdiagth_L → No Fault
2. VoutA_B_C_D <Vdiagth_L → Short to GND
3. VoutA >Vdiagth_H and VoutB < Vdiagth_L or VoutC > Vdiagth_H and VoutD < Vdiagth_L → Open load
VoutA_B_C_D > Vdiagth_H → Short to Battery
Figure 12. Stepper motor driver block diagram
GAPGPS00596
VB(*); VB_1(**)
(**)
(*)
(**) Chanel 2 is connected to VB_1
(*) Chanel 1 is connected to VB
L9177A
Electrical characteristics
DS12175 - Rev 5
page 19/55



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