L6219DSA STMicroelectronics, L6219DSA Datasheet - Page 10

• Manufacturer Part Number: L6219DSA
• Description: IC STEPPER MOTOR DRIVER SO-24
• Manufacturer: STMicroelectronics
• Type: Driverr

Specifications of L6219DSA

• Applications: DC Motor Driver, Stepper Motor Driver
• Number Of Outputs: 2/1
• Current - Output: ±750mA
• Voltage - Load: 10 V ~ 46 V
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 10 V to 46 V
• Supply Current: 0.01 A
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional description
2.4
2.5
10/15
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 R
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
t
and C
t
.
off
. If a new trigger signal should occur during t
t
off
= 1.1 · R
t
C
t
off
, it is ignored.
L6219DSA