L6219R_06 STMICROELECTRONICS [STMicroelectronics], L6219R_06 Datasheet - Page 6

• Manufacturer Part Number: L6219R_06
• Description: Stepper motor driver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Block diagram & pins description
Note:
6/16
Table 1.
ESD on GND, Vs, Vss, OUT 1A and OUT 2A is guaranteed up to 1.5KV (Human Body
Model, 1500W, 100pF).
10;16
11;15
12;14
Pin #
7;18
8;20
9;17
13
24
REFERENCE
Vss - LOGIC
Vs - LOAD
GROUND
VOLTAGE
INPUT 0
INPUT 1
SUPPLY
SUPPLY
Pin description (continued)
PHASE
Name
RC
See INPUT 1 (pins 9;17)
Ground Connection. With pins 6 and 19 also conducts heat from die to
printed circuit copper.
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.
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.
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).
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).
Supply Voltage Input for Logic Circuitry
Supply Voltage Input for the Output Stages.
Description
L6219R