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DS22259C-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 2916

Applications

• Stepper Motor Actuators

• DC Motor Actuators

• Automotive HVAC Ventilation

• Automotive Power Seats

Description

The MTS2916A motor driver is a CMOS device

capable 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

sustaining 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 direc-

tion 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 MTS2916A 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

OUT2A

I02

I12

PHASE2

RC2

GND

16

9

COMPIN1

OUT1A

SENSE1

GND

GND

OUT2B

15

10

RC1

SENSE2

COMPIN2

MTS2916A

SOP-24

PHASE1

I11

OUT1B

I01

11

12

14

13

Dual Full-Bridge Motor Driver

MTS2916A