L293E(1993) Просмотр технического описания (PDF) - STMicroelectronics

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L293E
(Rev.:1993)

PUSH-PULL FOUR CHANNEL DRIVERS

STMicroelectronics 

L293B - L293E

MOUNTING INSTRUCTIONS

The Rth j-amb of the L293B and the L293E can be re-

duced by soldering the GND pins to a suitable cop-

per area of the printed circuit board as shown in fig-

ure 12 or to an external heatsink (figure 13).

Figure 12 :Example of P.C. Board Copper

Area which is Used as Heatsink

During soldering the pins temperature must not ex-

ceed 260oC and the soldering time must not be

longer than 12 seconds.

The external heatsink or printed circuit copper area

must be connected to electrical ground.

Figure 13 :External Heatsink Mounting Ex-

ample (Rth = 30oC/W)

9/12

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