DocID7514 Rev 2

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L6208

Pin connections

35

Package

Name

Type

Function

SO24/

PowerDIP24

PowerSO36

Pin no.

Pin no.

822

Power output

Bridge B output 1.

924

RC pin

RC network pin. A parallel RC network connected

between this pin and ground sets the current controller

OFF-time of the bridge B.

10

25

Power supply

Bridge B source pin. This pin must be connected to

power ground through a sensing power resistor.

11

26

Analog input

Bridge B current controller reference voltage.

Do not leave this pin open or connected to GND.

12

27

HALF/FULL

Logic input

Step mode selector. HIGH logic level sets HALF STEP

mode, LOW logic level sets FULL STEP mode.

If not used, it has to be connected to GND or +5 V.

13

28

CONTROL

Logic input

Decay mode selector. HIGH logic level sets SLOW

DECAY mode. LOW logic level sets FAST DECAY

mode.

If not used, it has to be connected to GND or +5 V.

14

29

EN

Chip enable. LOW logic level switches OFF all Power

MOSFETs of both bridge A and bridge B. This pin is

also connected to the collector of the overcurrent and

thermal protection to implement overcurrent protection.

If not used, it has to be connected to +5 V through

a resistor.

15

30

VBOOT

Supply

voltage

Bootstrap voltage needed for driving the upper Power

MOSFETs of both bridge A and bridge B.

16

32

Power output

Bridge B output 2.

17

33

Power supply

Bridge B power supply voltage. It must be connected to

20

4

Power supply

Bridge A power supply voltage. It must be connected to

21

5

Power output

Bridge A output 2.

22

7

VCP

Output

Charge pump oscillator output.

23

8

RESET

Logic input

Reset pin. LOW logic level restores the home state

(state 1) on the phase sequence generator state

machine.

If not used, it has to be connected to +5 V.

24

9

Analog input

Bridge A current controller reference voltage.

Do not leave this pin open or connected to GND.

1. Also connected at the output drain of the overcurrent and thermal protection MOSFET. Therefore, it has to be driven putting

in series a resistor with a value in the range of 2.2 K

 - 180 K, recommended 100 K

Table 4. Pin description (continued)