厂商STMicroelectronics 半导体半导体 L297 数据手册，datasheet pdf下载

型号：	L297
厂商：	STMicroelectronics
标准：
分类：	半导体
描述：	stepper motor controllers
PDF：	预览
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L297

L297D

STEPPER MOTOR CONTROLLERS

NORMAL/WAWE DRIVE

HALF/FULL STEP MODES

CLOCKWISE/ANTICLOCKWISE DIRECTION

SWITCHMODE LOAD CURRENT REGULA-

TION

PROGRAMMABLE LOAD CURRENT

FEW EXTERNAL COMPONENTS

RESET INPUT & HOME OUTPUT

ENABLE INPUT

DIP20

SO20

: L297 (DIP20)

L297D (SO20)

ORDERING NUMBERS

DESCRIPTION

feature of this device is that it requires only clock,

direction and mode input signals. Since the phase

are generated internally the burden on the micro-

processor,and theprogrammer,is greatlyreduced.

Mounted in DIP20 and SO20 packages, the L297

can be used with monolithic bridge drives such as

the L298N or L293E, or with discrete transistors

and darlingtons.

The L297/A/D Stepper Motor Controller IC gener-

ates four phase drive signals for two phase bipolar

and four phase unipolar step motors in microcom-

puter-controlled applications. The motor can be

driven in half step, normal and wawe drive modes

and on-chip PWM chopper circuits permit switch-

mode control of the current in the windings. A

ABSOLUTE MAXIMUM RATINGS

Symbol

V_s

Parameter

Value

Unit

Supply voltage

Input signals

V_i

P_tot

Total power dissipation (T_amb= 70 C)

T_stg, T_j

Storage and junction temperature

-40 to + 150

TWO PHASE BIPOLAR STEPPER MOTOR CONTROL CIRCUIT

August 1996

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