L6208 查看數據表（PDF） - STMicroelectronics

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L6208

DMOS driver for bipolar stepper motor

STMicroelectronics 

L6208

Pin connections

Package

Table 4. Pin description (continued)

SO24/

PowerDIP24

PowerSO36

Name

Type

Function

Pin no.

Pin no.

8

22

OUT1B Power output

Bridge B output 1.

RC network pin. A parallel RC network connected

9

24

RCB

RC pin

between this pin and ground sets the current controller

OFF-time of the bridge B.

10

25

SENSEB Power supply

Bridge B source pin. This pin must be connected to

power ground through a sensing power resistor.

11

26

VREFB Analog input

Bridge B current controller reference voltage.

Do not leave this pin open or connected to GND.

Step mode selector. HIGH logic level sets HALF STEP

12

27

HALF/FULL Logic input

mode, LOW logic level sets FULL STEP mode.

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

Decay mode selector. HIGH logic level sets SLOW

13

28

CONTROL Logic input

DECAY mode. LOW logic level sets FAST DECAY

mode.

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

Chip enable. LOW logic level switches OFF all Power

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

14

29

EN

Logic input(1)

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

OUT2B Power output

Bridge B output 2.

17

33

VSB

Power supply

Bridge B power supply voltage. It must be connected to

the Supply Voltage together with pin VSA.

20

4

VSA

Power supply

Bridge A power supply voltage. It must be connected to

the supply voltage together with pin VSB.

21

5

OUT2A Power output

Bridge A output 2.

22

7

VCP

Output

Charge pump oscillator output.

Reset pin. LOW logic level restores the home state

23

8

RESET Logic input

(state 1) on the phase sequence generator state

machine.

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

24

9

VREFA 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

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