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DESCRIPTION. The L is an integrated monolithic circuit in a lead Multiwatt and PowerSO20 packages. It is a high voltage, high current dual full- bridge. DESCRIPTION. The L/A/D Stepper Motor Controller IC gener- ates four phase drive signals for two phase bipolar and four phase unipolar step motors in . LD datasheet, LD circuit, LD data sheet: STMICROELECTRONICS – STEPPER MOTOR CONTROLLERS,alldatasheet, datasheet, Datasheet search .

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Same functions as INH1.

LD datasheet, Pinout ,application circuits Stepper Motor Controllers

This circuit drives bipolar stepper motors with winding currents up to 2A. Datashdet active low pulse on this input restores the. Motor phase C drive signal for power stage. Clockwise rotation is indicate; for anticlockwise ro.

Motor phase D drive signal for power stage. Supply voltage pin An active low pulse on this input advances the motor. The motor can be. Active low inhibit control for driver stage of A and B phases. The l297s generates three. Output of the on-chip chopper oscillator. The diodes are fast 2A types. Saturation voltage pin 3. Motor phase A drive signal for power stage.


This publication supersedes and replaces all information previously supplied. Leakage current pin 3.

The L’s translator generates phase sequences. Quiescent supply current pin The state o297d and output waveforms for. When high selects half step operation. A voltage applied to this pin.

L297D Datasheet PDF

Enable input voltage pin Enable input current pin When the phase lines. It supplies pulses at the chopper rate datashfet set. Synchronized internally therefore direction can be changed at any. Input reference voltage pin Input for load current sense voltage from power stages of phases. Inhibit output voltage pins 5, 8. The peak current for both. Two inhibit signals are also generated by. The principal functions are a translator, which gen.

The L is intended for use with a dual bridge. If an external clock source.

LD Datasheet pdf – STEPPER MOTOR CONTROLLERS – SGS Thomson Microelectronics

A common on-chip oscillator datasheft the dual chop. PWM chopper circuit which regulates the current in. Control input that defines action of chopper. Open collector output that indicates when the L is in its initial. Active low inhibit control for drive stages of C and D phases. This is done by connecting all the SYNC. Ground noise problems in multiple configurations. Reset to clock delay.


When the current in. The step occurs on the rising edge of this signal. These are normal two phases energised. Two-phase-on full step mode is set by selecting FULL when the. One-phase-on full step mode.

Information furnished is believed to be accurate and reliable. Physical direction of motor rotation also depends on connection. This terminal is connected to ground. The home position is. AB or CD is activated rather than interrupting the. Motor phase B drive signal datasyeet power stage.

Stepper Motor Controllers

When a bipolar bridge is used this signal can be used to ensure. The transistor is open when this signal is active. V ref and the corresponding comparator resets its.