E-L9935 STMicroelectronics, E-L9935 Datasheet - Page 5
![IC STEPPER MOTOR DVR 2PH 20PWRSO](/photos/6/93/69347/497-20-powersoic_series_sml.jpg)
E-L9935
Manufacturer Part Number
E-L9935
Description
IC STEPPER MOTOR DVR 2PH 20PWRSO
Manufacturer
STMicroelectronics
Type
2 Phase Stepper Motor Driverr
Datasheet
1.L9935.pdf
(29 pages)
Specifications of E-L9935
Applications
Stepper Motor Driver, 2 Phase
Number Of Outputs
1
Current - Output
±1.2A
Voltage - Supply
8 V ~ 24 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Package / Case
PowerSO-20 Exposed Bottom Pad
Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
14.4 V
Supply Current
4.5 mA
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
L9935
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General application circuit proposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Typical average load current dependence on R
Displays a full bridge including the current sense circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Principal chopper control circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pulse diagram to explain offset chopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Normal PWM current versus short circuit current and detection of short to V
SPI data/clock timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Cascading several stepper motor drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Control sequence for 3 Stepper motor drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Paralleling several devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
State diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
EMC compatibility for L9935 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
PowerSO20 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Doc ID 5198 Rev 9
Sense
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
S
List of figures
. . . . . . . . . 16
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