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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Leakage current pin 3. V ref and the corresponding comparator resets its. The L’s translator generates phase sequences. Vatasheet voltage applied to this pin. Active low inhibit control for drive stages of C and D phases. Saturation voltage pin 3. Motor phase D drive signal for power stage. When a bipolar bridge is used this signal can be used to ensure. PWM chopper circuit which regulates the current in.

Information furnished is believed to be accurate and reliable. The L is intended dagasheet use with a dual bridge. Ground noise problems in multiple configurations. The motor can be. When the phase lines. This terminal is connected to ground. It supplies pulses at the chopper rate which set.


The diodes are fast 2A types. Two-phase-on full step mode is set by selecting FULL when the. An datasheft low pulse on this input advances the motor. Storage and junction temperature.

AB or CD is activated rather than interrupting the. Same functions as INH1. The translator generates three. An active low pulse on this input restores the.

Open collector output that indicates when the L is in its initial. Reset to clock delay. Enable input current pin Control input that defines action of chopper. These are normal two phases energised. Input reference voltage pin The principal functions are a translator, which gen. Reference voltage for chopper circuit.

Clockwise rotation is indicate; for anticlockwise ro.

Stepper Motor Controllers

This circuit drives bipolar stepper motors with winding currents up to 2A. The home position is. Output of the on-chip chopper oscillator.

Motor phase A drive signal for power stage. The step occurs on the rising edge of this signal. Physical direction of motor rotation also depends on connection.


LD Datasheet pdf – STEPPER MOTOR CONTROLLERS – SGS Thomson Microelectronics

Quiescent supply current pin Input for load current sense voltage from power stages of phases. This is done by connecting all the SYNC. Inhibit output voltage pins 5, 8.

One-phase-on full step mode. Motor phase C drive signal for power stage. When high selects half step operation. Enable input voltage pin Active low inhibit control for driver stage of A and B phases. The transistor is open when this signal is active. A common on-chip oscillator drives the dual chop. Two inhibit signals are also generated by. Supply voltage pin Synchronized internally dataasheet direction can be changed at any. The state sequences and output waveforms for.