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L6219DSA：Stepper Motor Driver, Injection control

The L6219DSA is a bipolar monolithic integrated circuit intended to control and drive both windings of a bipolar stepper motor or bidirectionally control two DC motors.

With only a few external components, the L6219DSA controls and drives the circuit for LS-TTL or microprocessor-controlled stepper motor systems. The power stage is a dual full bridge sustaining 46 V and including four diodes for current recirculation.

Cross conduction protection is provided to avoid simultaneous cross conduction during switching current direction.

An internal pulse-width modulation (PWM) controls the output current to 750 mA with peak startup current up to 1 A.

A wide range of current control from 750 mA (each bridge) is permitted by two logic inputs and an external voltage reference. A phase input to each bridge determines the load current direction. Thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits.

Key Features

• Drives both windings of a bipolar stepper motor
• Output current up to 750 mA for each winding
• Wide voltage range: 10 V to 46 V
• Half-step, full-step and microstepping mode
• Built-in protection diodes
• Internal PWM current control
• Low output saturation voltage
• Designed for unstabilized motor supply voltage
• Internal thermal shutdown

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