A3959SLB-T View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

A3959SLB-T

DMOS Full-Bridge PWM Motor Driver

Allegro MicroSystems 

1 2 3 4 5 6 7 8 9 10

A3959

DMOS Full-Bridge PWM Motor Driver

Thermal Characteristics

Characteristic

Symbol

B package

Test Conditions

Package Power Dissipation

PD

LB package

LP package

1-layer PCB, minimal exposed copper area

B Package 2-layer PCB, 1-in2. 2-oz copper exposed area

4-layer PCB, based on JEDEC standard

Package Thermal Resistance, Junction

to Ambient

RθJA

1-layer PCB, minimal exposed copper area

LB Package 2-layer PCB, 1-in2. 2-oz copper exposed area

4-layer PCB, based on JEDEC standard

1-layer PCB, minimal exposed copper area

LP Package 2-layer PCB, 1-in2. 2-oz copper exposed area

4-layer PCB, based on JEDEC standard

Package Thermal Resistance, Junction

to Tab

Package Thermal Resistance, Junction

to Pad

RθJT

RθJP

B and LB packages

LP package

*Additional thermal information available on Allegro website.

5

SUFFIX 'B', RQJA = 26oC/W

SUFFIX 'LP', RQJA = 28oC/W

SUFFIX 'LB', RQJA = 35oC/W

4

4-LAYER BOARD

3

2

1 SUFFIX 'B', RQJA = 36oC/W

SUFFIX 'LP', RQJA = 40oC/W

SUFFIX 'LB', RQJA = 51oC/W

2-LAYER BOARD,

1 SQ. IN. COPPER EA. SIDE

0

25

50

75

100

125

150

TEMPERATURE IN oC

Value

3.3

2.5

3.1

54

36

26

77

51

35

100

40

28

6

2

Units

W

W

W

ºC/W

ºC/W

ºC/W

ºC/W

ºC/W

ºC/W

ºC/W

ºC/W

ºC/W

ºC/W

ºC/W

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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