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STMicroelectronics - DMOS PROGRAMMABLE HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER

Numéro de référence L6223
Description DMOS PROGRAMMABLE HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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L6223 fiche technique
L6223
DMOS PROGRAMMABLE
HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER
HIGH EFFICIENCY UNIPOLAR STEPPER
MOTOR DRIVER
HIGH SPEED UNIPOLAR STEPPER MOTOR
DRIVER
SUPPLY VOLTAGE UP TO 46V
PHASE CURRENT UP TO 1A
UP TO 2A/PHASE IN DUAL CONFIGURA-
TION
PARALLEL CMOS µP INTERFACE FOR
FULL/HALF STEP MOTOR ROTATION
SERIAL INTERFACE FOR 6 BIT PROGRAM-
MING
CLOSE/OPEN LOOP, 8 PWM CURRENT
LEVELS
DUAL PWM FREQUENCY SELECTION
INPUT BIDIRECTIONALLY PROTECTED
THERMAL SHUTDOWN
DESCRIPTION
The L6223 is a programmable integrated system
for driving a unipolar stepper motor. It is realized
in Multipower BCD technology. The DMOS output
BLOCK DIAGRAM
MULTIPOWER BCD TECHNOLOGY
POWERDIP
16+2+2
ORDERING NUMBER : L6223
stage, realized by a single upper DMOS switch
and four lower DMOS, can deliver up to 1A/phase
with motor supply voltages up to 46V.
All inputs are CMOS and microprocessor compat-
ible. An internal 6-bit shift register allows the de-
vice to be programmed to select different duty cy-
cles in open loop mode and different chopping
frequencies in closed loop mode. When the cur-
rent control is in closed loop mode it is also possi-
ble to select a reduced current chopping level to
optimize system efficiency. The L6223 is de-
March 1998
1/33

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