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L6219 Arkusz danych(PDF) 7 Page - STMicroelectronics

Numer części L6219
Szczegółowy opis  Stepper motor driver
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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L6219
Block diagram
7/16
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).
Figure 3.
Timing diagram
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)
13
VSS - Logic supply Supply voltage input for logic circuitry
24
VS - Load supply
Supply voltage input for the output stages
Table 3.
Pin functions (continued)
Pin #
Name
Description
Table 4.
Thermal data
Parameter
Description
PDIP
SO
Unit
Rthj-case
Thermal resistance junction-case
max.
14
18
°C/W
Rthj-amb
Thermal resistance junction-ambient
max.
60 (1)
1.
With minimized copper area.
75 (1)
°C/W


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