E-L6219

L6219 Stepper motor driver Datasheet - production data 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 46 V and including four diodes for current recirculation. SO24 (20 + 2 + 2) 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 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. Table 1. Device summary October 2018 This is information on a product in full production. Part number Package Packing E-L6219DS SO24 Tube E-L6219DS013TR SO24 Tape and reel DocID1377 Rev 14 1/14 www.st.com Contents L6219 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 informations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 5 2/14 SO24 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 DocID1377 Rev 14 L6219 1 Block diagram Block diagram Figure 1. Block diagram Table 2. 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 DocID1377 Rev 14 3/14 14 Block diagram L6219 Figure 2. SO24 pins connection (top view) Table 3. Pin functions Pin no. Name 1, 2 Output A 3, 23 Sense resistor Connection to lower emitters of output stage for insertion of current sense resistor. 4, 22 Comparator input Input connected to the comparators. The voltage across the sense resistor is feedback to this input through the low pass filter RC CC. The higher power transistors are disabled when the sense voltage exceeds the reference voltage of the selected comparator. When this occurs the current decays for a time set by RT CT (toff = 1.1 RT CT). See Figure 3. 5, 21 Output B 6, 19 Ground See pins 7, 18 7, 18 Ground Ground connection. With pins 6 and 19 also conducts heat from die to printed circuit copper. 8, 20 Input 0 See Input 1 (pins 9, 17) Input 1 These pins and pins 8, 20 (input 0) are logic inputs which select the outputs of the comparators to set the current level. Current also depends on the sensing resistor and reference voltage. See functional description. 9, 17 4/14 Description See pins 5, 21 Output connection. The output stage is a H bridge formed by four transistors and four diodes suitable for switching applications. DocID1377 Rev 14 L6219 Block diagram Table 3. Pin functions (continued) Pin no. Name Description 10, 16 Phase This TTL-compatible logic inputs sets the direction of current flow through the load. A high level causes current to flow from output A (source) to output B (sink). A Schmitt trigger on this input provides good noise immunity and a delay circuit prevents output stage short-circuits during switching. 11, 15 Reference voltage A voltage applied to this pin sets the reference voltage of the comparators, this determining the output current (also thus depending on Rs and the two inputs input 0 and input 1). RC A parallel RC network connected to this pin sets the OFF time of the higher power transistors. The pulse generator is a monostable triggered by the output of the comparators (toff = 1.1 RT CT). 12, 14 13 24 Note: VSS - Logic supply Supply voltage input for logic circuitry VS - Load supply Supply voltage input for the output stages ESD on GND, VS, VSS, OUT 1 A and OUT 2 A is guaranteed up to 1.5 KV (human body model, 1500 W, 100 pF). Figure 3. Timing diagram Table 4. Thermal data Parameter Rthj-case Rthj-amb Description Thermal resistance junction-case Thermal resistance junction-ambient SO24 Unit max. 18 °C/W max. 75(1) °C/W 1. With minimized copper area. DocID1377 Rev 14 5/14 14 Block diagram L6219 Table 5. Electrical characteristics (Tj = 25 °C, VS = 46 V, VSS = 4.75 V to 5.25 V, VREF = 5 V, unless otherwise specified) see Figure 5 Parameter Description Test condition Min. Typ. Max. Unit - 10 - 46 V VOUT = Vs, VOUT = 0 -