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DS22260C-page 1

Features

• 750 mA Continuous Output Current

• Load Voltage Supply: 10V to 40V

• Full Bipolar Stepper Motor Drive Capability

• Bidirectional DC Motor Capability

• Internal Protection Diodes

• Internal Thermal Shutdown

• Under Voltage Lockout

• LS-TTL Compatible Logic Inputs with Pull-Up

Resistors

• Low Quiescent Current

• Operating Temperature Range: -40°C to +105°C

• Pin Compatible with Allegro 6219

Applications

• Stepper Motor Actuators

• DC Motor Actuators

• Automotive HVAC Ventilation

• Automotive Power Seats

Description

The MTS62C19A motor driver is a CMOS device capa-

ble of driving both windings of a bipolar stepper motor

or bidirectionally control two DC motors. Each of the

two independent H-bridge outputs is capable of sus-

taining 40V and delivering up to 750 mA of continuous

current. The output current level is controlled by an

internal pulse-width modulation (PWM) circuit that is

configured using two logic inputs, a current sense

resistor, and a selectable reference voltage. The

H-bridge outputs have been optimized to provide a low

output saturation voltage drop.

Full, half and micro-stepping operations are possible

with the PWM current control and logic inputs. The

maximum output current is set by a sensing resistor

and a user-selectable reference voltage. The output

current limit is selected using two logic level inputs. The

selectable output current limits are 0%, 33%, 67% or

100% of the maximum output current. Each bridge has

a PHASE input signal which is used to control the

direction of current flow through the H-bridge and the

load.

The H-bridge power stage is controlled by non-overlap-

ping signals which prevent current cross conduction

when switching the direction of the current flow. Internal

clamp diodes protect against inductive transients.

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

Note:

The MTS62C19A device is formerly a

product of Advanced Silicon.

GND

1

2

3

4

24

23

22

21

20

19

18

17

5

6

7

8

I01

OUT1A

OUT2A

SENSE2

COMPIN2

OUT2B

GND

16

9

I11

PHASE1

GND

GND

I02

SENSE1

15

10

I12

PHASE2

OUT1B

COMPIN1

MTS62C19A

SOP-24

RC2

RC1

11

12

14

13

Dual Full-Bridge Motor Driver

MTS62C19A