L6219R013TR STMicroelectronics, L6219R013TR Datasheet - Page 11

• Manufacturer Part Number: L6219R013TR
• Description: IC DRIVER STEPPER MOTOR 24SOIC
• Manufacturer: STMicroelectronics
• Type: Driverr

Specifications of L6219R013TR

• Applications: DC Motor Driver, Stepper Motor Driver
• Number Of Outputs: 2/1
• Current - Output: ±500mA
• Voltage - Load: 4.5 V ~ 10 V
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 4.5 V to 30 V
• Supply Current: 0.01 A
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-4003-2

L6219R
3.4
3.5
3.6
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 toff. If a new trigger signal should occur during toff, it is ignored.
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.
Internal circuitry is added in order to increase the accuracy of the motor current particularly
with low current levels.
V
The circuit will stand any order of turn-on or turn-off the supply voltages V
dV/dt values are then assumed.
Preferably, V
S
, V
SS
, V
Ref
Principle operating sequence
Ref
should be tracking V
t
and C
t
.
SS
t
off
during power-on and power-off if V
= 1.1 · R
t
C
t
Functional description
S
and V
S
is established.
SS
. Normal
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