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L6208 Datasheet(PDF) 7 Page - STMicroelectronics

No. de pieza L6208
Descripción Electrónicos  DMOS driver for bipolar stepper motor
Download  35 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6208 Datasheet(HTML) 7 Page - STMicroelectronics

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L6208
Pin connections
35
Package
Name
Type
Function
SO24/
PowerDIP24
PowerSO36
Pin no.
Pin no.
822
OUT1B
Power output
Bridge B output 1.
924
RCB
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
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.
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
Logic input(1)
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
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.
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
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
Table 4. Pin description (continued)


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