Anterwell Technology Ltd.
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L6219 Stepper motor driver
Features
■ Able to drive both windings of bipolar stepper motor
■ Output current up to 750 mA 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
Description
The L6219 is a bipolar monolithic integrated circuits intended to control and drive both winding of a bipolar stepper motor or bidirectionally control two DC motors.
The L6219 with a few external components form a complete control and drive circuit for LS-TTL or microprocessor controlled stepper motor system. The power stage is a dual full bridge capable of sustaining 46V and including four diodes for current recirculation.
A 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.
Wide range of current control from 750 mA (each bridge) is permitted by means of two logic inputs and an external voltage reference. A phase input to each bridge determines the load current direction. A thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits.
Absolute maximum rating
| Parameter | Description | Value | Unit |
| Vs | Supply voltage | 50 | V |
| IO | Output current (peak) | ±1 | A |
| IO | Output current (continuous) | ±0.75 | A |
| Vss | Logic supply voltage | 7 | V |
| Vin | Logic input voltage range | -0.3 to +7 | V |
| Vsense | Sense output voltage | 1.5 | V |
| Tj | Junction temperature | +150 | °C |
| Top | Operating temperature range | -20 to +85 | °C |
| Tstg | Storage temperature range | -55 to +150 | °C |
Block diagram
PDIP24 (20+2+2) SO24 (20+2+2)