DMOS Dual Full-Bridge

Microstepping PWM Motor Driver

A3992

2

Allegro MicroSystems, LLC

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

Thermal Characteristics*

Characteristic

Symbol

Notes

Rating

Units

Package Thermal Resistance

B package on 4-layer PCB

26

°C/W

2 oz. copper each side

36

°C/W

LP package on 4-layer PCB

28

°C/W

2 oz. copper each side

32

°C/W

*Additional thermal data available on the Allegro website.

Selection Guide

Part Number

Packing

Package

A3992SB-T

15 pieces/tube

24 pin batwing DIP

A3992SLPTR-T

Tape, 4000 pieces/reel

24 pin TSSOP with

exposed thermal pad

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

Load Supply Voltage

50

V

Output Current

Output current rating may be limited by duty cycle, ambient

temperature, and heat sinking. Under any set of conditions, do

not exceed the specified current rating or a junction tempera-

ture of 150°C.

±1.5

A

Logic Supply Voltage

7.0

V

Logic Input Voltage Range

–0.3 to 7

V

VBBx to OUTx Voltage

50

V

OUTx to SENSEx Voltage

50

V

REF Reference Voltage

3V

SENSE Voltage (DC)

500

mV

Operating Ambient Temperature

Range S

–20 to 85

ºC

Maximum Junction Temperature

150

ºC

Storage Temperature

–55 to 150

ºC