L6219(1996) Просмотр технического описания (PDF) - STMicroelectronics

Номер в каталоге

Компоненты Описание

производитель

L6219
(Rev.:1996)

STEPPER MOTOR DRIVER

STMicroelectronics 

L6219

PIN CONNECTIONS (Top view)

Powerdip and SO

PLCC44

PIN FUNCTIONS

PLCC

(*)

1;2

4;42

5;41

8;38

6;7;17

29;39;

40

16;37

19;30

20;27

21;26

22;25

24

44

PDIP &

SO

Name

Function

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. The voltage across the sense resistor is

INPUT

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 fig. 1.

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

13

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

24 Vs - LOAD SUPPLY Supply Voltage Input for the Output Stages.

(*) Pins: 3, 9,10,11,12,13,14,15,18,23,28,31,32,33,34,35,36,43 are Not Connected.

Note: ESD on GND, VS, VSS, OUT 1A and OUT 2A is guaranteed up to 1.5KV (Human Body Model, 1500Ω, 100pF).

2/10

Share Link: