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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Stepper Motor Controllers

The principal functions are a translator, which gen. This is done by connecting all the SYNC. Reference voltage for chopper circuit. Inhibit output voltage pins 5, 8. This publication supersedes and replaces all information previously supplied. Leakage current pin 3. An active low pulse on this input restores the. Control input that defines action of chopper.


This terminal is connected to ground. A common on-chip oscillator drives the dual chop. The L’s translator generates phase sequences. Active low inhibit control for driver stage of A and B phases.

LD Datasheet(PDF) – STMicroelectronics

These are normal two phases energised. Clockwise rotation is indicate; for anticlockwise ro. The step occurs on the rising edge of this signal. Supply voltage pin This circuit drives bipolar stepper motors with winding currents up to 2A. Physical direction of motor rotation also depends on connection. The peak current for both.

Reset to clock delay. The state sequences and output waveforms for. When high selects half step operation. One-phase-on full step mode. V ref and the corresponding comparator resets its. Storage and junction temperature.

Saturation voltage pin 3. A voltage applied to this pin. Same functions as INH1. Ground noise problems in multiple configurations. Motor phase B drive signal for power stage. When a bipolar bridge is used this signal can be used to ensure. Two-phase-on full step mode is set by selecting FULL when the. The L is intended for use with a dual bridge. Synchronized internally therefore direction can be changed at any. The translator generates three.


Motor phase C drive signal for power stage. The motor can be. When the L is used. The home position is.

When the phase lines. Input reference voltage pin AB or CD is activated rather than interrupting the.