MTS62C19A-LS105 Microchip

MTS62C19A Dual Full-Bridge Motor Driver Features Description 750 mA Continuous Output Current The MTS62C19A motor driver is a CMOS device capa- ble of driving both windings of a bipolar stepper motor Load Voltage Supply: 10V to 40V or bidirectionally control two DC motors. Each of the Full Bipolar Stepper Motor Drive Capability two independent H-bridge outputs is capable of sus- Bidirectional DC Motor Capability taining 40V and delivering up to 750 mA of continuous Internal Fixed T Time PWM Current Control OFF current. The output current level is controlled by an Internal Protection Diodes internal pulse-width modulation (PWM) circuit that is Internal Thermal Shutdown configured using two logic inputs, a current sense resistor, and a selectable reference voltage. The Under Voltage Lockout H-bridge outputs have been optimized to provide a low LS-TTL Compatible Logic Inputs with Pull-Up output saturation voltage drop. Resistors Full, half and micro-stepping operations are possible Low R Output Resistance ON with the PWM current control and logic inputs. The Low Quiescent Current maximum output current is set by a sensing resistor Operating Temperature Range: -40C to +105C and a user-selectable reference voltage. The output Pin Compatible with Allegro 6219 current limit is selected using two logic level inputs. The selectable output current limits are 0%, 33%, 67% or Applications 100% of the maximum output current. Each bridge has a PHASE input signal which is used to control the Stepper Motor Actuators direction of current flow through the H-bridge and the DC Motor Actuators load. Automotive HVAC Ventilation The H-bridge power stage is controlled by non-overlap- Automotive Power Seats ping signals which prevent current cross conduction when switching the direction of the current flow. Internal Note: The MTS62C19A device is formerly a clamp diodes protect against inductive transients. product of Advanced Silicon. Thermal protection circuitry disables the outputs when the junction temperature exceeds the safe operating limit. No special power-up sequencing is required. Undervoltage Lockout circuitry prevents the chip from operating when the load supply is applied prior to the logic supply. The device is supplied in a 24-pin SOP Package. Package Types MTS62C19A OUT1A V 1 24 LOAD SOP-24 OUT2A 2 23 SENSE1 SENSE2 3 22 COMPIN1 OUT1B COMPIN2 4 21 OUT2B 5 20 I01 GND GND 6 19 GND 7 18 GND I02 8 17 I11 I12 9 16 PHASE1 PHASE2 10 15 V REF1 11 14 V RC1 REF2 12 13 RC2 V LOGIC 2010-2013 Microchip Technology Inc. DS22260C-page 1MTS62C19A Functional Block Diagram V V LOGIC LOAD PHASE1 Shift Drivers Logic I01 OUT1A Power I11 Bridge OUT1B Current V REF1 Sense One-shot Comparator Thermal Under-V Shutdown Lockout PHASE2 Shift Drivers Logic I02 OUT2A Power I12 Bridge OUT2B Current V REF2 Sense One-shot Comparator COMPIN1 COMPIN2 RC2 RC1 GND SENSE1 SENSE2 DS22260C-page 2 2010-2013 Microchip Technology Inc.