L6219

UNISONIC TECHNOLOGIES CO., LTD L6219 DUAL FULL-BRIDGE PWM MOTOR DRIVER DESCRIPTION The L6219 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 45V and include internal pulse-width modulation (PWM) control of the output current to 750mA .The outputs have been optimized for a low output saturation voltage drop (less than 1.8V total source plus sink at 500mA ). For PWM current control, the maximum output current is determined by the user’s 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 cross-over 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. LINEAR INTEGRATED CIRCUIT S OP-24 *Pb-free plating product number: L6219L FEATURES *Interchangeable with SGS L6219 *750mA Continuous Output Current *45V Output Sustaining Voltage *Internal Clamp Diodes *Internal PWM Current Control *low Output Saturation Voltage *Internal Thermal Shutdown Circuitry ORDERING INFORMATION Order Number Normal Lead Free Plating L6219-S24-R L6219L-S24-R L6219-S24-T L6219L-S24-T Package SOP-24 SOP-24 Packing Tape Reel Tube L6219L-S24-R (1)Packing Type (2)Package Type (3)Lead Plating (1) R: Tape Reel, T: Tube (2) S24: SOP-24 (3) L: Lead Free Plating, Blank: Pb/Sn www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd 1 of 6 QW-R109-005,B L6219 PIN CONFIGURATION LINEAR INTEGRATED CIRCUIT OUT1A OUT2A SENSE2 COMP IN2 OUT2B GROUND GROUND 1 2 3 4 5 6 7 8 2 VBB 24 23 LOAD SUPPLY SENSE1 COMP IN1 OUT1B I01 GROUND GROUND I11 PHASE1 1 22 21 20 19 18 17 I02 I12 PHASE2 PWM1 9 PWM2 10 11 12 θ2 θ1 16 15 14 VREF1 RC1 LOGIC SUPPLY VREF2 RC2 Vcc 13 PWM CURRENT-CONTROL CIRCUITRY CHANNEL 1 TERMINAL NUMBERS SHOWN VBB 24 OUTB 1 OUTA 21 VREF 15 20kΩ ÷ 10 23 SENSE COMP IN 22 RC 40kΩ + CC RT ONE SHOT 14 RC CT SOURCE DISABLE I0 I1 10kΩ RS 20 17 TRUTH TABLE PHASE H L OUTA H L OUTB L H UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R109-005,B L6219 TYPICAL APPLICATION LINEAR INTEGRATED CIRCUIT STEPPER MOTOR 1 2 RS Rc Cc 3 4 5 6 7 8 PWM2 FROM μP VREF 2 VBB 24 23 RS Rc Cc + VBB 1 22 21 20 19 18 17 FROM μP PWM1 9 10 11 12 θ2 θ1 16 15 14 VREF Vcc 13 +5V CT RT RT CT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R109-005,B L6219 ABSOLUTE MAXIMUM RATINGS (Ta = 25℃) PARAMETER Motor Supply Voltage LINEAR INTEGRATED CIRCUIT SYMBOL VBB RATINGS UNIT 45 V Peak 1.0 A Output Current IOUT Continuous 750 mA Logic Supply Voltage VCC 7.0 V Logic Input Voltage Range VIN -0.3 ~ +7.0 V Output Emitter Voltage VSENSE 1.5 V Package Power Dissipation PD See graph Junction Temperature TJ 125 °C Operating Temperature TOPR -20~+85 °C Storage Temperature TSTG -40 ~ +150 °C Note 1.Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2.The device is guaranteed to meet performance specification within 0℃~+70°C operating temperature range and assured by design from -20℃~+85°C. 3.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 ELECTRICAL CHARACTERISTICS(Ta=25°C, VCC=4.75V to 5.25V, VBB=45V, TJ≤150°C, VREF=5.0V) PARAMETER SYMBOL Output Drivers(OUTA or OUTB) Motor Supply Range VBB Output Leakage Current Output Sustaining Voltage Output Saturation Voltage Clamp Diode Leakage Current Clamp Diode Forward Voltage Driver Supply Current Control Logic TEST CONDITIONS MIN 10 45 2.4 1.5 9.5 13.5 25.5 - TYP