L6223A ST Microelectronics, Inc., L6223A Datasheet - Page 30

• Manufacturer Part Number: L6223A
• Description: Dmos Programmable High Speed Unipolar Stepper Motor Driver
• Manufacturer: ST Microelectronics, Inc.

L6223A
Figure 34: R
Figure 35: Transient thermal resistance for single pulses
Thermal characteristics.
The p.c.b. copper size needed for a defined ther-
mal resistance between junction and ambient is
shown in Fig. 34. Fig. 35 and Fig. 36 are useful to
30/33
th
with two ”on board” square heatsink vs. side I.
estimate the typical thermal resistance junction to
ambient for a single pulse of peak power and for
a repetetive peak respectively.