L293, L293D

QUADRUPLE HALFH DRIVERS

SLRS008C − SEPTEMBER 1986 − REVISED NOVEMBER 2004

10

POST OFFICE BOX 655303

APPLICATION INFORMATION

3

4

5

6

7

8

1

2

9

10

11

12

13

14

15

16

+

+

+

+

D7

D8

D4

D3

L2

IL2

C1

D5

D1

D6

D2

VCC1

L293

IL1/IL2 = 300 mA

0.22

µF

VCC2

L1

IL1

D1−D8 = SES5001

Figure 6. Bipolar Stepping-Motor Control

mounting instructions

The Rthj-amp of the L293 can be reduced by soldering the GND pins to a suitable copper area of the printed

circuit board or to an external heat sink.

copper areas having a thickness of 35

µm (see Figure 7). In addition, an external heat sink can be used (see

Figure 8).

During soldering, the pin temperature must not exceed 260

°C, and the soldering time must not exceed 12

seconds.

The external heatsink or printed circuit copper area must be connected to electrical ground.