ADuM1253

Ultra-Low-Power, I2C Isolator with

Unidirectional SCL, Extended VDD,

Idle-Bus Hot-Swap, and Low VOL

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Analog Devices | 10

Figure 3. Thermal Derating Curve for 8-Lead Narrow SOIC

Package

Figure 4. Thermal Derating Curve for Safety Current Limiting for

8-Lead Narrow SOIC Package

Figure 5 and Figure 6 show the thermal derating curves for safety limiting the power and the current of the device in the

8-lead Wide SOIC (21-100415) package when mounted on the JEDEC 2S2P test card. Ensure that the junction

temperature does not exceed 150°C.

Figure 5. Thermal Derating Curve for 8-Lead Wide SOIC

Package

Figure 6. Thermal Derating Curve for Safety Current Limiting for

8-Lead Wide SOIC Package

0

50

100

150

200

250

300

350

400

0

25

50

75

100 125 150 175 200

A

T T

RAT R ( C)

V

1 = 1.8V

y2 ata

y3 ata

y4 ata

T

R A

RAT

C RV

R A

T C RR

T

T

s n

C

V

= 1.89V

V

= 2.75V

V

= 3.6V

V

= 5.5V

0

100

200

300

400

500

600

700

800

0

25

50

75 100 125 150 175 200

A

T T

RAT R ( C)

T

R A

RAT

C RV

R A

T

R

T

C

0

50

100

150

200

250

300

350

400

0

25

50

75 100 125 150 175 200

A

T T

RAT R ( C)

V

1 = 1.8V

y2 ata

y3 ata

y4 ata

T

R A

RAT

C RV

R A

T C RR

T

T

s

C

V

= 1.89V

V

= 2.75V

V

= 3.6V

V

= 5.5V