E-L6219DSATR 데이터 시트보기 (PDF) - STMicroelectronics

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E-L6219DSATR

Stepper motor driver for automotive range

STMicroelectronics 

Block diagram

Figure 2. SO24 pins connection (top view)

L6219DSA

Table 3. Pin functions

Pin #

Name

Description

1, 21

3, 23

4, 22

2, 5

Output of bridge 1 See pins 2, 5

Sense resistor

Connection to lower emitters of output stage for insertion of

current sense resistor

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 3.

Output Connection. The output stage is a "H" bridge formed

Output of bridge 2 by four transistors and four diodes suitable for switching

applications

6, 7, 18, 19

8, 20

Ground

Input 0

Ground connection, they also conducts heat from die to

printed circuit copper

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 functional description

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