L6219R STMicroelectronics

L6219R Stepper motor driver Features Able to drive both windings of bipolar stepper motor Output current up to 500 mA each winding Wide voltage range 4.5 V to 10 V Half-step, full-step and microstepping mode SO-24 (20+2+2) Built-in protection diodes Internal pwm current control Low output saturation voltage Designed for unstabilized motor supply voltage A cross conduction protection is provided to avoid Internal thermal shutdown simultaneous cross conduction during switching current direction. Description An internal pulse-width-modulation (PWM) The L6219R is a bipolar monolithic integrated controls the output current to 500mA with peak circuits intended to control and drive both winding start-up current up to 1 A. Wide range of current of a bipolar stepper motor or bidirectionally control control from 500 mA (each bridge) is permitted by two DC motors.The L6219R with a few external means of two logic inputs and an external voltage components form a complete control and drive reference. A phase input to each bridge circuit for LS-TTL or microprocessor controlled determines the load current direction. A thermal stepper motor system.The power stage is a dual protection circuitry disables the outputs if the chip full bridge capable of sustaining 10 V and temperature exceeds safe operating limits. including four diodes for current recirculation. Table 1. Device summary Part number Package Packing L6219R SO-24 Tube L6219R013TR SO-24 Tape & reel (1) E-L6219R SO-24 Tube (1) E-L6219R013TR SO-24 Tape & reel 1. Lead free package (ECOPACK) see Chapter 5. September 2008 Rev 4 1/16 www.st.com 1Table of contents L6219R Table of contents 1 Block diagram and pins description 5 2 Electrical specifications 7 2.1 Absolute maximum ratings . 7 2.2 Thermal data . 7 2.3 Electrical characteristics . 8 3 Functional description 10 3.1 Input logic (I0 and I1) 10 3.2 Phase 10 3.3 Current sensor . 10 3.4 Single-pulse generator . 11 3.5 Output stage . 11 3.6 VS, VSS, VRef . 11 4 Application informations 12 4.1 Electrical characteristics curves 13 5 Package informations . 14 6 Revision history . 15 2/16