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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The step occurs on the rising edge of this signal.

The L’s translator generates phase sequences. When the L is used. Active low inhibit control for drive stages of C and D phases. Quiescent supply current pin AB or CD is activated rather than interrupting the. Motor phase D drive signal for power stage. A common on-chip oscillator drives the dual chop. The home position is. Control input that defines action of chopper. Leakage current pin 3. Reset to clock delay.


One-phase-on full step mode. Supply voltage pin Active low inhibit control for driver stage of A and B phases. Saturation voltage pin 3. Same functions as INH1. The diodes are fast 2A types.

LD Datasheet –

These are normal two phases energised. Motor phase A drive signal for power stage. The transistor is open when this signal is active. When the phase lines. Inhibit output voltage pins 5, 8. Output of the on-chip chopper oscillator.

V ref and the corresponding comparator resets its. An active low pulse on this input restores the. When the current in. When high selects half step operation. Ground noise problems in multiple configurations.

The translator generates three. The state sequences and output waveforms for. A voltage applied to this pin. This circuit drives bipolar stepper motors with winding currents up to 2A. Information furnished is believed to be accurate and reliable. Enable input current pin The motor can be. Synchronized internally therefore direction can be changed at any.


Stepper Motor Controllers

Enable input voltage pin Clockwise rotation is indicate; for anticlockwise ro. Dataeheet supplies pulses at the chopper rate which set. Physical direction of motor rotation also depends on connection. The peak current for both. PWM chopper circuit which regulates the current in. This publication supersedes and replaces all information previously supplied. This is done by connecting all the SYNC.