L6219R Datasheet E-L6219R013TR, L6219R, L6219R013TR | P4-P6

List of figures L6219R

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List of figures

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

Figure 2. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3. Windings of a bipolar stepper motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 4. Principle operating sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

Figure 6. Maximum output current vs. supply voltage (DAC=100%) . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 7. Maximum reference voltages vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 8. Maximum output current vs. reference voltage (DAC=100%) . . . . . . . . . . . . . . . . . . . . . . 13

Figure 9. SO-24 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

L6219R Block diagram and pins description

5/16

1 Block diagram and pins description

Figure 1. Block diagram

Figure 2. Pin connection (top view)

Block diagram and pins description L6219R

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Note: ESD on GND, Vs, Vss, OUT 1 A and OUT 2 A is guaranteed up to 1.5 KV (human body

model, 1500 W, 100 pF).

Table 2. Pin description

Pin # Name Description

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

Input connected to the comparators. The voltage across the sense

resistor is feedback to this input throught the low pass filter RC CC. The

higher power transistors are disabled when the sense voltage exceeds

the reference voltage of the selected comparator. When this occurs the

current decays for a time set by RT CT (toff = 1.1 RT CT). See Figure 4

5,21 Output B

Output connection. The output stage is a H bridge formed by four

transistors and four diodes suitable for switching applications

6,19 Ground See pins 7,18

7,18 Ground

Ground connection. With pins 6 and 19 also conducts heat from die to

printed circuit copper

8,20 Input 0 See input 1 (pins 9,17)

9,17 Input 1

These pins and pins 8,20 (input 0) are logic inputs which select the

outputs of the comparators to set the current level. Current also depends

on the sensing resistor and reference voltage. See funcional description

10,16 Phase

This TTL-compatible logic inputs sets the direction of current flow through

the load. a high level causes current to flow from output a (source) to

output B (sink). A schmitt trigger on this input provides good noise

immunity and a delay circuit prevents output stage short circuits during

switching

11,15

Reference

voltage

A voltage applied to this pin sets the reference voltage of the

comparators, this determining the output current (also thus depending on

Rs and the two inputs input 0 and input 1)

12,14 RC

A parallel RC network connected to this pin sets the OFF time of the

higher power transistors. The pulse generator is a monostable triggered

by the output of the comparators (toff = 1.1 RT CT)

Vss - Logic

supply

Supply voltage input for logic circuitry

Vs - Load

supply

Supply voltage input for the output stages

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P16

L6219R

Mfr. #:

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Manufacturer:

STMicroelectronics

Description:

Motor / Motion / Ignition Controllers & Drivers Dual Stepper Motor

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L6219R

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