|Description||Dual Full-bridge PWM Motor Driver|
|Company||Allegro Micro Systems, Inc.|
|Datasheet||Download A6219 datasheet
|Cross ref.||Similar parts: LV8746V-TLM-E|
|VBB LOAD SUPPLY SENSE 1 COMP IN 1 OUT I 01 GROUND I 11 PHASE 1 V REF RC 1 LOGIC SUPPLY
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 the user's selection of a reference voltage and sensing resistor. Two logic-level inputs select output current limits 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. The L6219DS is supplied a 24-lead surface-mountable SOIC. Its batwing construction provides for maximum package power dissipation in the smallest possible construction. This device is also available on special order for operation from to +105°C.
Motor Supply Voltage, VBB.................... 45 V Output Current, IOUT (Peak)........................................ +1.0 A (Continuous).......................... +750 mA Logic Supply Voltage, VCC................... 7.0 V Logic Input Voltage Range, VIN............................... +7.0 V Output Emitter Voltage, VSENSE............ 1.5 V Package Power Dissipation, PD........................................................ See Graph Operating Temperature Range, TA................................. to +85°C Storage Temperature Range, TS............................... to +150°C
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.FEATURES
s Interchangeable with SGS 750 mA Continuous Output Current 45 V Output Sustaining Voltage s Internal Clamp Diodes s Internal PWM Current Control s Low Output Saturation Voltage s Internal Thermal Shutdown Circuitry s Similar to Dual PBL3717, UC3770Always order by complete part number, e.g., L6219DS.
RJA is measured on typical twosided PCB with minimal copper ground area (77°C/W) or with 3.57 in2 copper ground area (49°C/W). See also, Application Note 29501.5, Improving Batwing Power Dissipation.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts (508) 853-5000 Copyright 1998, 2003 Allegro MicroSystems, Inc.ELECTRICAL CHARACTERISTICS TJ 150°C, VBB 45 V, VCC 5.25 V, VREF 5.0 V (unless otherwise noted).
Limits Characteristic Output Drivers (OUTA or OUTB) Motor Supply Range Output Leakage Current VBB ICEX VOUT = VBB VOUT = 0 Output Sustaining Voltage Output Saturation Voltage VCE(sus) VCE(SAT) IOUT ± 750 mA, 3.0 mH Sink Driver, IOUT +500 mA Sink Driver, IOUT +750 mA Source Driver, IOUT -500 mA Source Driver, IOUT -750 mA Clamp Diode Leakage Current Clamp Diode Forward Voltage Driver Supply Current IR VF IBB(ON) IBB(OFF) Control Logic Input Voltage VIN(1) VIN(0) Input Current IIN(1) All inputs All inputs VIN 2.4 V VIN 0.8 V Reference Voltage Range Current Limit Threshold (at trip point) VREF / VCOMPIN Operating 2.4 V Thermal Shutdown Temperature Total Logic Supply Current TJ ICC(ON) ICC(OFF) V, No Load V, No Load 750 mA Both Bridges On, No Load Both Bridges Off V mA Symbol Test Conditions Min. Typ. Max. Units
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