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

DESCRIPTION

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

August 1996

Symbol

Parameter

Value

Unit

Supply voltage

10

V

Input signals

7V

°C)

1

W

Storage and junction temperature

-40 to + 150

°C

ABSOLUTE MAXIMUM RATINGS

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 the programmer, is greatly reduced.

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.

TWO PHASE BIPOLAR STEPPER MOTOR CONTROL CIRCUIT

DIP20

SO20

ORDERING NUMBERS : L297 (DIP20)

L297D (SO20)

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