E-L6219DS STMicroelectronics, E-L6219DS Datasheet - Page 10

• Manufacturer Part Number: E-L6219DS
• Description: Motor / Motion / Ignition Controllers & Drivers Dual Stepper Motor
• Manufacturer: STMicroelectronics
• Type: Stepper Motor Controllerr

Specifications of E-L6219DS

• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 10 V to 46 V
• Supply Current: 15 mA
• Mounting Style: SMD/SMT
• Package / Case: SO-24
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional description
2.4
2.5
10/16
Single-pulse generator
The pulse generator is a monostable triggered on the positive going edge of the comparator
output. The monostable output is high during the pulse time, toff, which is determined by the
time components Rt and Ct.
The single pulse switches off the power feed to the motor winding, causing the winding
current to decrease during t
Output stage
The output stage contains four darlington transistors (source drivers) four saturated
transistors (sink drivers) and eight diodes, connected in two H bridge.
Figure 4.
The source transistors are used to switch the power supplied to the motor winding, thus
driving a constant current through the winding. It should be noted however, that is not
permitted to short circuit the outputs.
Principle operating sequence
off
. If a new trigger signal should occur during t
t
off
= 1.1 · R
t
C
t
off
, it is ignored.
L6219