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L9177 Datasheet(PDF) 21 Page - STMicroelectronics

Part # L9177
Description  Peripheral on chip for low end engine control
PDF  49 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9177 Datasheet(HTML) 21 Page - STMicroelectronics

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L9177
Electrical specifications
48
3.5.13
Tachometer driver
3.5.14
Stepper motor driver
Table 19. Tachometer driver electrical characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit
Ioc
Overcurrent threshold
-
100
-
500
mA
Ron
On resistance
I = 25 mA
-
-
5
Ω
Ilk_off
Leakage current
Vout = 18 V, diagnosis OFF
-
-
10
μA
Ilk_on
Leakage current
Vout = 18 V, diagnosis ON
-
-
100
μA
ton_off
Turn on-off delay
From CMD (serial or
parallel) rising edge
--
6
μs
VOL
Open load output voltage driver in OFF condition
0.46*VDD
0.5*VDD
0.54*VDD
V
Vdiagth_H(1) Diagnostic high threshold Driver in OFF condition
0.54*VDD
0.6*VDD
0.66*VDD
V
Vdiagth_L(1) Diagnostic low threshold Driver in OFF condition
0.36*VDD
0.4*VDD
0.44*VDD
V
1. Vdiagth_L<Vout<Vdiagth_H  Open Load; Vout<Vdiagth_L  Short to GND
Table 20. Stepper motor driver electrical characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit
Ioc
Overcurrent threshold
ON condition
0.85
-
2
A
RdsON
On resistance HS+LS
Iout = 0.5 A,
Tj = 150 °C, VB = 14 V
-
-
2.6
Ω
fstepper
Working frequency
Application note
-
-
20
kHz
Vout_off(1)
OUTA_B_C_D output
voltage
OUTA short to OUTB;
OUTC short to OUTD;
Stepper driver disable
0.44*VDD
0.5*VDD 0.54*VDD
V
Vdiagth_H
Diagnostic high threshold
Driver in OFF condition
0.54*VDD
0.6*VDD 0.66*VDD
V
Vdiagth_L
Diagnostic low threshold
Driver in OFF condition
0.36*VDD
0.4*VDD 0.44*VDD
V
IDSS_OUT
Output leakage current
Driver in OFF condition
-
-
10
μA
tscvb
Over current switch_off time Guaranteed by scan
-
-
25
μs
trb
Rise output time
VB = 12 V, RI = 39 Ω
--
15
μs
tfb
Fall output time
VB = 12 V, RI = 39 Ω
--
15
μs
trb-a
Rise output time
Tamb = 25 °C,
VB = 12 V, RI = 39 Ω
--
10
μs
tfb-a
Fall output time
-
-
10
μs
tpHLb
Turn-off in/out delay time
VB = 12 V, RI = 39 Ω
--
15
μs
tpLHb
Turn-off in/out delay time
-
-
15
μs
Vreverse_HS Reverse HS diode drop
Driver in OFF condition
Iinjected = 0.5 A
-
-
1.5
V



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