6

ISO7740, ISO7741, ISO7742

SLLSEP4A – MARCH 2016 – REVISED JUNE 2016

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Product Folder Links: ISO7740 ISO7741 ISO7742

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(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

6.4 Thermal Information

ISO774x

UNIT

DW (SOIC)

DBQ (QSOP)

16 Pins

16 Pins

Junction-to-ambient thermal resistance

83.4

109.0

°C/W

Junction-to-case(top) thermal resistance

46.0

54.4

°C/W

Junction-to-board thermal resistance

48.0

51.9

°C/W

Junction-to-top characterization parameter

19.1

14.2

°C/W

Junction-to-board characterization parameter

47.5

51.4

°C/W

Junction-to-case(bottom) thermal resistance

—

—

°C/W

6.5 Power Rating

PARAMETER

TEST CONDITIONS

VALUE

UNIT

ISO7740

Maximum power dissipation

Input a 50 MHz 50% duty cycle square wave

200

mW

Maximum power dissipation by side-1

40

mW

Maximum power dissipation by side-2

160

mW

ISO7741

Maximum power dissipation

Input a 50 MHz 50% duty cycle square wave

200

mW

Maximum power dissipation by side-1

50

mW

Maximum power dissipation by side-2

150

mW

ISO7742

Maximum power dissipation

Input a 50 MHz 50% duty cycle square wave

200

mW

Maximum power dissipation by side-1

100

mW

Maximum power dissipation by side-2

100

mW