L6223 datasheet(1/33 Pages) STMICROELECTRONICS

部品番号	L6223

部品情報	DMOS PROGRAMMABLE HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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March 1998

BLOCK DIAGRAM

POWERDIP

16+2+2

MULTIPOWER BCD TECHNOLOGY

ORDERING NUMBER : L6223

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

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-

1/33

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