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L6219DS Datasheet(PDF) 1 Page - Allegro MicroSystems |
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L6219DS Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 8 page DUAL FULL-BRIDGE PWM MOTOR DRIVER 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 deter- mined 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. The L6219DS is supplied in 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 -40 °C to +85°C or to +105°C. FEATURES I Interchangeable with SGS L6219DS I 750 mA Continuous Output Current I 45 V Output Sustaining Voltage I Internal Clamp Diodes I Internal PWM Current Control I Low Output Saturation Voltage I Internal Thermal Shutdown Circuitry I Similar to Dual PBL3717, UC3770 L6219DS 1 2 3 4 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 θ 2 θ 1 VCC 2 VBB 1 GROUND GROUND GROUND GROUND 02 I 12 I PHASE 2 V REF 2 2 RC 1 RC V REF 1 PHASE 1 11 I 2B OUT SENSE 2 2 COMP IN 2A OUT 1A OUT 1 COMP IN SENSE 1 1B OUT 01 I LOAD SUPPLY LOGIC SUPPLY Dwg. PP-005-3 Always order by complete part number, e.g., L6219DS . ABSOLUTE MAXIMUM RATINGS at T J ≤ 150°C Motor Supply Voltage, V BB .................... 45 V Output Current, I OUT (Peak) ........................................ +1.0 A (Continuous) .......................... +750 mA Logic Supply Voltage, V CC ................... 7.0 V Logic Input Voltage Range, V IN ............................... -0.3 V to +7.0 V Output Emitter Voltage, V SENSE ............ 1.5 V Package Power Dissipation, P D ........................................................ See Graph Operating Temperature Range, T A ................................. -20 °C to +85°C Storage Temperature Range, T S ............................... -55 °C 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. |
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