Block diagram

L6219DSA

6/15

Figure 2.

SO24 pins connection (top view)

Table 3.

Pin functions

Pin #

Name

Description

1, 21

Output of bridge 1

See pins 2, 5

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

Figure 3.

2, 5

Output of bridge 2

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

by four transistors and four diodes suitable for switching

applications

6, 7, 18, 19

Ground

Ground connection, they 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 functional description