EVAL6208N Datasheet, PDF (4/27 Pages) STMicroelectronics – DMOS DRIVER FOR BIPOLAR STEPPER MOTOR

L6208
PIN DESCRIPTION
PACKAGE
SO24/
PowerDIP24
PowerSO36
Name
Type
Function
PIN #
PIN #
1
10
CLOCK
Logic Input Step Clock input. The state machine makes one step on
each rising edge.
2
11
CW/CCW Logic Input Selects the direction of the rotation. HIGH logic level sets
clockwise direction, whereas LOW logic level sets
counterclockwise direction.
If not used, it has to be connected to GND or +5V.
3
12
SENSE_A Power Supply Bridge A Source Pin. This pin must be connected to Power
Ground through a sensing power resistor.
4
13
RC_A
RC Pin
RC Network Pin. A parallel RC network connected
between this pin and ground sets the Current Controller
OFF-Time of the Bridge A.
5
15
OUT1_A Power Output Bridge A Output 1.
6, 7,
18, 19
1, 18,
19, 36
GND
GND
Ground terminals. In PowerDIP24 and SO24 packages,
these pins are also used for heat dissipation toward the
PCB. On PowerSO36 package the slug is connected to
these pins.
8
22
OUT1_B Power Output Bridge B Output 1.
9
24
RC_B
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
SENSE_B Power Supply Bridge B Source Pin. This pin must be connected to Power
Ground through a sensing power resistor.
11
26
VREF_B 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 +5V.
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 +5V.
14
29
EN
Logic Input ^{(6) 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 over current protection.
If not used, it has to be connected to +5V through a
resistor.
15
30
VBOOT
Supply
Bootstrap Voltage needed for driving the upper Power
Voltage MOSFETs of both Bridge A and Bridge B.
16
32
OUT2_B Power Output Bridge B Output 2.
17
33
VS_B
Power Supply Bridge B Power Supply Voltage. It must be connected to
the Supply Voltage together with pin VS_A
20
4
VS_A
Power Supply Bridge A Power Supply Voltage. It must be connected to
the Supply Voltage together with pin VS_B
4/27