L6219DS STMicroelectronics, L6219DS Datasheet - Page 9

IC STEPPER MOTOR DRVR 24-SOIC

L6219DS

Manufacturer Part Number
L6219DS
Description
IC STEPPER MOTOR DRVR 24-SOIC
Manufacturer
STMicroelectronics
Type
Driverr
Datasheet

Specifications of L6219DS

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
-20°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Operating Current
15mA
Operating Temperature Classification
Commercial
Package Type
SO
Operating Supply Voltage (min)
10V
Operating Supply Voltage (max)
46V
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
Other names
497-1427-5
497-1427-5
497-3647-5
L6219DS

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L6219
2
2.1
2.2
2.3
Functional description
The circuit is intended to drive both windings of a bipolar stepper motor.
The peak current control is generated through switch mode regulation. There is a choice of
three different current levels with the two logic inputs I01 - I11 for winding 1 and I02 - I12 for
winding 2.
The current can also be switched off completely.
Input logic (I
The current level in the motor winding is selected with these inputs. (See
the logic inputs is left open, the circuit will treat it has a high level input.
Table 6.
Phase
This input determines the direction of current flow in the windings, depending on the motor
connections. The signal is fed through a schmidt-trigger for noise immunity, and through a
time delay in order to guarantee that no short-circuit occurs in the output stage during
phase-shift. High level on the phase input causes the motor current flow from out A through
the winding to out B.
Current sensor
This part contains a current sensing resistor (R
comparators. Only one comparator is active at a time. It is activated by the input logic
according to the current level chosen with signals I
the sensing resistor RS. When the current has increased so that the voltage across R
becomes higher than the reference voltage on the other comparator input, the comparator
goes high, which triggers the pulse generator.
The max peak current Imax can be defined by:
I0
H
H
L
L
Current levels
0
and I
I1
H
H
L
L
1
)
No current
Low current 1/3 IO max
Medium current 2/3 IO max
Maximum current IO max
I
max
=
-------------
10R
V
S
ref
), a low pass filter (R
o
s
and I
1
Current level
. The motor current flows through
Functional description
C
, C
Figure
C
) and three
4). If any of
S
9/16

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