E-L6219DSATR STMicroelectronics

L6219DSA Stepper motor driver Datasheet production data 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 SO24 Low output saturation voltage Cross conduction protection is provided to avoid Designed for unstabilized motor supply voltage simultaneous cross conduction during switching current direction. Internal thermal shutdown An internal pulse-width modulation (PWM) Description controls the output current to 750 mA with peak startup current up to 1 A. The L6219DSA is a bipolar monolithic integrated A wide range of current control from 750 mA circuit intended to control and drive both windings (each bridge) is permitted by two logic inputs and of a bipolar stepper motor or bidirectionally control an external voltage reference. A phase input to two DC motors. each bridge determines the load current direction. With only a few external components, the Thermal protection circuitry disables the outputs if L6219DSA controls and drives the circuit for LS- the chip temperature exceeds safe operating TTL or microprocessor-controlled stepper motor limits. systems. The power stage is a dual full bridge sustaining 46 V and including four diodes for current recirculation. Table 1. Device summary Order code Package Packing E-L6219DSA SO24 Tube E-L6219DSATR SO24 Tape and reel October 2012 Doc ID 4970 Rev 4 1/12 This is information on a product in full production. www.st.com 12Contents L6219DSA Contents 1 Block diagram 3 2 Functional description . 7 2.1 Input logic (I0 and I1) . 7 2.2 Phase . 7 2.3 Current sensor 7 2.4 Single-pulse generator 8 2.5 Output stage 8 2.6 VS, VSS, VRef 9 3 Application information 9 4 Package mechanical data 10 5 Revision history . 11 2/12 Doc ID 4970 Rev 4