L6208Q View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6208Q' PDF : 34 Pages View PDF
L6208Q
Pin connection
Table 3. Pin description (continued)
Pin
Name
Type
Function
15, 16
17
18
19
20
21
22, 23
34, 35
26, 27
38, 39
40
41
42
SENSEB
Power supply
Bridge B source pin. This pin must be connected to power ground
through a sensing power resistor.
VREFB
Analog input
Bridge B current controller reference voltage. Do not leave this pin
open or connected to GND.
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 must be connected to GND or
+5 V.
CONTROL
Logic input
Decay mode selector. High logic level sets slow decay mode. Low
logic level sets fast decay mode. If not used, it must 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 also connected to the collector of
EN
Logic input(1) the overcurrent and thermal protection to implement overcurrent
protection. If not used, it must be connected to +5 V through
a resistor.
VBOOT
Supply voltage
Bootstrap voltage needed for driving the upper power MOSFETs of
both bridge A and bridge B.
OUT2B
VSA
VSB
OUT2A
VCP
Power output Bridge B output 2.
Power supply
Power supply
Power Output
Bridge A power supply voltage. It must be connected to the supply
voltage together with pin VSB.
Bridge B power supply voltage. It must be connected to the supply
voltage together with pin VSA.
Bridge A output 2.
Output
Charge pump oscillator output.
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 must be
connected to +5 V.
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 must be driven putting
in series a resistor with a value in the range of 2.2 k - 180 k, recommended 100 k.
DocID018710 Rev 3
7/34
34
Share Link: 
