E-L6219DSA

步进电机驱动汽车范围 Stepper motor driver for automotive range

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**

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Drives both windings of a bipolar stepper motor

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Output current up to 750 mA for each winding

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Wide voltage range: 10 V to 46 V

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Half-step, full-step and microstepping mode

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Built-in protection diodes

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Internal PWM current control

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Low output saturation voltage

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Designed for unstabilized motor supply voltage

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Internal thermal shutdown