ST L6219DSA User Manual

Stepper motor driver for automotive range

Features

■ Able to drive both windings of bipolar stepper

motor

■ Output current up to 750 mA each winding

■ Wide voltage range: 10 V to 46 V

■ Half-step, full-step and microstepping mode

■ Built-in protection diodes

■ Internal PWM current control

■ Low output saturation voltage

■ Designed for unstabilized motor supply voltage

■ Internal thermal shutdown

Description

L6219DSA

SO24 (20+2+2)

A cross conduction protection is provided to avoid
simultaneous cross conduction during switching
current direction.

An internal pulse-width-modulation (PWM)
controls the output current to 750 mA with peak
startup current up to 1 A.

The L6219DSA is a bipolar monolithic integrated
circuits intended to control and drive both winding
of a bipolar stepper motor or bidirectionally control
two DC motors.

The L6219DSA with a few external components
form a complete control and drive circuit for LS­TTL or microprocessor controlled stepper motor
system. The power stage is a dual full bridge
capable of sustaining 46 V and including four
diodes for current recirculation.

Table 1. Device summary

Order code Package Packing

E-L6219DSA SO24 Tube

E-L6219DSATR SO24 Tape & reel

Wide range of current control from 750 mA (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.

September 2008 Rev 3 1/15

www.st.com

1

Contents L6219DSA

Contents

1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1 Input logic (I0 and I1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2 Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Current sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Single-pulse generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.5 Output stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.6 VS, VSS, VRef . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2/15

L6219DSA List of tables

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Table 3. Pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 5. Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 6. Current levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 7. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3/15

List of figures L6219DSA

List of figures

Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. SO24 pins connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4. Principle operating sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 5. Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 6. SO24 mechanical data and package dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4/15

L6219DSA Block diagram

1 Block diagram

Figure 1. Block diagram

Table 2. Absolute maximum rating

Parameter Description Value Unit

Supply voltage 50 V

Output current (peak) ±1 A

Output current (continuous) ±0.75 A

Logic supply voltage 7 V

Logic input voltage range -0.3 to +7 V

Sense output voltage 1.5 V

Junction temperature +150 °C

Operating temperature range -40 to +125 °C

Storage temperature range -55 to +150 °C

V

T

V

s

I

O

I

O

V

ss

V

in

sense

T

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T

op

stg

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