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LS7290 - STEPPER MOTOR CONTROLLER

General Description

The LS7290 generates Phase Drive outputs a nd PWM output s for controlling twophase Bipolar Motors or four-phase Un ipolar Motors, respectively.

The LS7290 contains a mod e controlled loo k-up table for generating the motor duty cycle drive sequences.

Key Features

  • July 2011 Controls Bipolar and Unipolar motors Cost-effective replacement for L297 Full, ½ step mode selected with mode input Direction control Reset input Step control input Enable input PWM chopper circuit for current control Two peak-current comparators with external reference input Step control frequency and duty cycle controlled by an external frequency source.

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Datasheet Details

Part number LS7290
Manufacturer LSI
File Size 510.83 KB
Description STEPPER MOTOR CONTROLLER
Datasheet download datasheet LS7290 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LS7290 STEPPER MOTOR CONTROLLER FEATURES: • • • • • • • • • • • • • July 2011 Controls Bipolar and Unipolar motors Cost-effective replacement for L297 Full, ½ step mode selected with mode input Direction control Reset input Step control input Enable input PWM chopper circuit for current control Two peak-current comparators with external reference input Step control frequency and duty cycle controlled by an external frequency source or by an internal crystal controlled oscillator (typically 8 MHz) All inputs and outputs TTL/CMOS compatible (TTL for 5V operation) 3V to 5.5V Operation (VDD – VSS) LS7290 (DIP), LS7290-S (SOIC), LS7290-TS (TSSOP) – See Figure 1.