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A3966

Dual Full-Bridge PWM Motor Driver

Allegro MicroSystems 

A3966

Dual Full-Bridge PWM Motor Driver

Description (continued)

each bridge, an ENABLE input, when held high, disables the output

drivers. Special power-up sequencing is not required. Internal circuit

protection includes thermal shutdown with hysteresis, ground-clamp

and flyback diodes, and crossover-current protection.

The A3966 is supplied in a 16-lead plastic wide SOIC with two pins

internally fused to the die pad for enhanced thermal dissipation. These

pins are at ground potential and need no electrical isolation. The

device is lead (Pb) free, with 100% matte tin leadframe plating.

Selection Guide

Part Number

A3966SLBTR–T

Packing

1000 pieces / reel

Ambient Temperature Range

(°C)

–20 to 85

Absolute Maximum Ratings

Characteristic

Load Supply Voltage

Logic Supply Voltage

Input Voltage

Sense Voltage

Output Current*

Package Power Dissipation

Operating Ambient Temperature

Maximum Junction Temperature

Storage Temperature

Symbol

VBB

VCC

VIN

VS

IOUT

PD

TA

TJ(max)

Tstg

Notes

Peak

Continuous

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 TJ(max)

TA = 25°C; per SEMI G42-88 Specification, Thermal Test

Board Standardization for Measuring Junction-to-Ambient

Thermal Resistance of Semiconductor Packages.

Range S

Rating

30

7.0

–0.3 to VCC + 0.3

1.0

±750

±650

1.87

–20 to 85

150

–55 to 150

Units

V

V

V

V

mA

mA

W

ºC

ºC

ºC

Pin-out Diagram

OUT1A 1

PHASE 1 2

ENABLE 1 3

GROUND 4

V BB

LOGIC LOGIC

16 OUT2A

15 PHASE 2

14 ENABLE 2

13 GROUND

SENSE1 5

OUT1B 6

LOAD

SUPPLY

7

V BB

REFERENCE 8 VREF

12 SENSE 2

11 OUT 2B

VCC

10

LOGIC

SUPPLY

RC 9 RC

Allegro MicroSystems, LLC

2

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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