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L9942 Datasheet(PDF) 15 Page - STMicroelectronics

Part # L9942
Description  Integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile
PDF  37 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9942 Datasheet(HTML) 15 Page - STMicroelectronics

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L9942
3 Electrical specifications
15/37
3.4.4
Charge Pump Output
VS = 7 to 20 V, VCC = 3.0 to 5.3 V, EN=VCC, Tj = -40 to 150 °C, IREF = -200 µA, unless
otherwise specified. The voltages are referred to GND and currents are assumed positive,
when the current flows into the pin.
Table 10.
Charge Pump Output
The ripple of voltage at CP can suppressed using a capicity of e.g.100nF.
3.4.5
Outputs: Qxn (x=A;B n=1;2)
VS = 7 to 20 V, VCC = 3.0 to 5.3 V, EN=VCC, Tj = -40 to 150 °C, IREF = -200 µA, unless
otherwise specified. The voltages are referred to GND and currents are assumed positive,
when the current flows into the pin
Table 11.
Outputs: Qxn (x=A;B n=1;2)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VCP
charge pump output voltage
VS=7V
ICP= -100µA, all
switches off at
Qxn
11
20
V
VS=13.5V
20
35
V
VS=20V
30
40
V
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
RDSON HS
on-resistance Qxn to
VS
VS = 13.5 V, Tj = 25 °C,
IQxn = -1.0A
500
700
m
Ω
VS = 13.5 V, Tj = 125 °C,
IQxn = -1.0 A
750
1000
m
Ω
VS = 7.0 V, Tj = 25 °C,
IQxn = -1.0 A
550
750
m
Ω
RDSON LS
on-resistance Qxn to
PGND
VS = 13.5 V, Tj = 25 °C,
IQxn = + 1.0A
500
700
m
Ω
VS = 13.5 V, Tj = 125 °C,
IQxn = + 1.0 A
750
1000
m
Ω
VS = 7.0 V, Tj = 25 °C,
IQxn = + 1.0 A
550
750
m
Ω
|IQxnOC |
output overcurrent
limitation to VS or
PGND
testmode exclusive of
filtertime 4us (
Chapter 2.10)
1.6
2
A



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