Self-Calibrating TPOS Gear Tooth Sensor Optimized

for Automotive Cam Sensing Applications

ATS673 and

ATS674

16

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

Power Derating

THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information

Characteristic

Symbol

Test Conditions*

Value

Units

Package Thermal Resistance

1-layer PCB with copper limited to solder pads

101

ºC/W

77

ºC/W

0

5

10

15

20

25

30

20

40

60

80

100

120

140

160

180

Power Derating Curve

Pads Only PCB

1-Layer PCB

0

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

20

40

60

80

100

120

140

160

180

Power Dissipation Versus Ambient

for Sample PCBs

(R

θJ

A

=1

01º

C/W)

Minimum-K

PCB

(R

θJA

=

77

ºC/W)

Low-K

P

CB

*Additional information is available on the Allegro Web site.