A3969 데이터 시트보기 (PDF) - Allegro MicroSystems

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A3969

Dual Full-Bridge PWM Motor Driver

Allegro MicroSystems 

A3969

Dual Full-Bridge PWM Motor Driver

Description (continued)

For each bridge, a PHASE input controls load-current polarity by

selecting the appropriate source and sink driver pair. For 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.

TheA3969 is supplied in a 28-pin QFN lead (Pb) free plastic package

with exposed thermal pad and 100% matte tin leadframe plating. It

has a 5 x 5 mm footprint and 0.90 mm nominal height.

Selection Guide

Part Number

Packing*

A3969SET-T

73 pieces/tube

A3969SETTR-T

Tape, 3000 pieces/reel

*Contact Allegro for additional packing options

Package

5 x 5 mm QFN, 28 pin

Absolute Maximum Ratings

Characteristic

Load Supply Voltage

Output Current

Logic Supply Voltage

Input Voltage

Sense Voltage

Operating Ambient Temperature

Maximum Junction Temperature

Storage Temperature

Symbol

VBB

IOUT

VCC

Vin

VS

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 a

junction temperature of 150°C.

Range S

Rating

30

±750

±650

7

-0.3 to

VCC + 0.3

0.45

–20 to 85

150

–55 to 150

Units

V

mA

mA

V

V

V

ºC

ºC

ºC

Thermal Characteristics* (additional data available on Allegro Web site)

Characteristic

Symbol

Notes

Rating

Units

Package Thermal Resistance, Junction-to-Ambient

RθJA

4-layer PCB, based on JEDEC standard

32

°C/W

Package Thermal Resistance, Junction-to-Tab

RθJT

2

°C/W

Package Power Dissipation

PD(max)

RθJA = 32 °C/W, TA = 25°C

3.9

W

* Per SEMI G42-88 Specification, Thermal Test Board Standardization for Measuring Junction-to-Ambient Thermal Resistance of Semiconductor

Packages.

Allegro MicroSystems, Inc.

2

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

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