Maker : Allegro MicroSystems
Part No. : A6219DS

  Datasheet PDF : A6219DS.pdf
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Product Information

A6219DS www.DataSheet4U.com Dual Full-Bridge PWM Motor Driver Features and Benefits ▪ Interchangeable with SGS L6219DS ▪ 750 mA Continuous Output Current ▪ 45 V Output Sustaining Voltage ▪ Internal Clamp Diodes ▪ Internal PWM Current Control ▪ Low Output Saturation Voltage ▪ Internal Thermal Shutdown Circuitry ▪ Similar to Dual PBL3717, UC3770 Description The L6219DS motor driver is designed to drive both windings of a bipolar stepper motor or bidirectionally control two DC motors. Both bridges are capable of sustaining 45 V and include internal pulse-width modulation (PWM) control of the output current to 750 mA. The outputs have been optimized for a low output saturation voltage drop (less than 1.8 V total source plus sink at 500 mA). For PWM current control, the maximum output current is determined by user selection of a reference voltage and sensing resistor. Two logic-level inputs select output current limits of 0, 33, 67, or 100% of the maximum level. A PHASE input to each bridge determines load current direction. The bridges include both ground clamp and flyback diodes for protection against inductive transients. Internally generated delays prevent crossover currents when switching current direction. Special power-up sequencing is not required. Thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits. The L6219DS is supplied in a 24-pin surface-mountable SOIC, with 4 internally-fused leads for maximum package power dissipation in the smallest possible construction. It is lead (Pb) free with 100% matte tin leadframe plating. Package: 24 pin SOICW (suffix LB) Not to scale Typical Application STEPPER MOTOR 1 2 RS RC C C VBB V 24 23 RS RC 22 21 20 19 18 17 FROM μP CC + BB 3 4 5 6 7 8 2 1 FROM μP 99 PWM 1 1 16 15 14 820 pF V 10 V REF 2 PWM 2 REF 11 12 820 pF CT VCC 13 +5 V C 56 k RT T 56 k RT Dwg. EP-008B1 29319.43H L6219DS Selection Guide Part Number L6219DS-T L6219DSTR-T Dual Full-Bridge PWM Motor Driver www.DataSheet4U.com Packing 31 pieces per tube 1000 pieces per reel Operating Ambient Temperature Range TA (°C) –20 to 85 –20 to 85 Absolute Maximum Ratings Characteristic Motor Supply Voltage Logic Supply Voltage Logic Input Voltage Range Output Emitter Voltage Output Current, Peak Symbol VBB VCC VIN VSENSE IOUT(pk) Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified peak current rating or a junction temperature of +150°C. Range S Notes Rating 45 7.0 –0.3 to VCC+0.3 1.5 1.0 Units V V V V A Output Current, Continuous IOUT 750 mA Operating Ambient Temperature Maximum Junction Temperature Storage Temperature TA TJ(max) Tstg –20 to 85 150 –55 to 150 ºC ºC ºC Thermal Characteristics Characteristic Package Thermal Resistance Symbol RθJA RθJT *Additional thermal information available on the Allegro website. 2.5 Test Conditions* 1-layer PCB with copper limited to solder pads 1-layer PCB with 3.57 in.2 of copper area Value Units 77 49 6 ºC/W ºC/W ºC/W R θJT = 6°C/W 2.0 1.5 R θJA= 49°C/W 1.0 0.5 R θJA= 77°C/W 0 25 50 75 100 125 150 Dwg. GP-019C TEMPERATURE in °C Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 2 L6219DS Dual Full-Bridge PWM Motor Driver w w w . D a t a S h e e t 4 U PWM Current-Control Circuitry CHANNEL 1 TERMINAL NUMBERS SHOWN. VBB 24 Phase Truth Table PHASE H L OUTA H L OUTB L H OUT B 1 21 OUT A V REF 15 20 k 10 40 k I 0 20 I 1 17 10 k RS 23 SENSE COMP IN – 22 + CC ONE SHOT 14 SOURCE DISABLE RC RC RT CT Dwg. EP-007-5 Pin-Out Diagram OUT 1A OUT 2A SENSE 2 COMP IN 2 OUT 2B GROUND GROUND I 02 I12 PHASE 2 V REF 2 RC 2 1 2 3 4 5 6 7 8 2 1 VBB 24 23 22 21 20 19 18 17 LOAD SUPPLY SENSE 1 COMP IN 1 OUT 1B I 01 GROUND GROUND I11 PHASE 1 V REF 1 RC 1 LOGIC SUPPLY PWM 1 9 1 16 15 14 ...

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