L6219D STMicroelectronics, L6219D Datasheet

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L6219D

Manufacturer Part Number
L6219D
Description
STEPPER MOTOR DRIVER
Manufacturer
STMicroelectronics
Datasheet
October 2001
DESCRIPTION
The L6219 is a bipolar monolithic integrated cir-
cuits intended to control and drive both winding of
a bipolar stepper motor or bidirectionally control
two DC motors.
The L6219 with a few external components form
a complete control and drive circuit for LS-TTL or
microprocessor controlled stepper motor system.
The power stage is a dual full bridge capable of
sustaining 46V and including four diodes for cur-
rent recirculation.
A cross conduction protection is provided to avoid
BLOCK DIAGRAM
ABLE TO DRIVE BOTH WINDINGS OF BIPO-
LAR STEPPER MOTOR
OUTPUT CURRENT UP TO 750mA EACH
WINDING
WIDE VOLTAGE RANGE 10V TO 46V
HALF-STEP, FULL-STEP AND MICROSTEPP-
ING MODE
BUILT-IN PROTECTION DIODES
INTERNAL PWM CURRENT CONTROL
LOW OUTPUT SATURATION VOLTAGE
DESIGNED FOR UNSTABILIZED MOTOR
SUPPLY VOLTAGE
INTERNAL THERMAL SHUTDOWN
®
simultaneous cross conduction during switching
current direction.
An internal pulse-width-modulation (PWM) con-
trols the output current to 750mA with peak start-
up current up to 1A.
Wide range of current control from 750mA (each
bridge) is permitted by means of two logic inputs
and an external voltage reference. A phase input to
each bridge determines the load current direction.
A thermal protection circuitry disables the outputs
if the chip temperature exceeds safe operating
limits.
STEPPER MOTOR DRIVER
Powerdip 20+2+2
L6219
ORDERING NUMBERS:
SO20+2+2
L6219DS
L6219
1/9

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L6219D Summary of contents

Page 1

... Wide range of current control from 750mA (each bridge) is permitted by means of two logic inputs and an external voltage reference. A phase input to each bridge determines the load current direction. A thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits. L6219 L6219DS 1/9 ...

Page 2

L6219 PIN CONNECTION (Top view) PIN FUNCTIONS PDIP & Name SO 1;2 OUTPUT A See pins 5;21 3;23 SENSE RESISTOR Connection to Lower Emitters of Output Stage for Insertion of Current Sense Resistor 4;22 COMPARATOR Input connected to the comparators. ...

Page 3

ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage S I Output Current (peak Output Current (continuous Logic Supply Voltage SS V Logic Input Voltage Range IN V Sense Output Voltage sense T Junction Temperature J T Operating ...

Page 4

L6219 ELECTRICAL CHARACTERISTICS (Continued) Symbol Parameter PROTECTION T Thermal Shutdown Temperature J Figure 1 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 ...

Page 5

Figure 2: Principle Operating Sequence 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 ...

Page 6

L6219 current regulation. Unused inputs should be connected to proper voltage levels in order to get the highest noise im- munity. As the circuit operates with switch mode current regulation, interference generation might arise in some applications. A good measure ...

Page 7

DIM. MIN. TYP. MAX. MIN. A 4.320 A1 0.380 0.015 A2 3.300 B 0.410 0.460 0.510 0.016 B1 1.400 1.520 1.650 0.055 c 0.200 0.250 0.300 0.008 D 31.62 31.75 31.88 1.245 E 7.620 8.260 0.300 e 2.54 E1 ...

Page 8

L6219 mm DIM. MIN. TYP. MAX. MIN. A 2.35 2.65 0.093 A1 0.10 0.30 0.004 A2 2.55 B 0.33 0.51 0.013 C 0.23 0.32 0.009 D 15.20 15.60 0.598 E 7.40 7.60 0.291 e 1.27 H 10.0 10.65 0.394 h ...

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... STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics © ...

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