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
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