OPA2991IDSGR datasheet(10/78 Pages) TI

10 / 78 page

6.4 Thermal Information for Single Channel (continued)

THERMAL METRIC (1)

OPA991, OPA991S

UNIT

DBV

(SOT-23)

DCK

(SC70)

5 PINS

6 PINS

5 PINS

RθJC(bot)

Junction-to-case (bottom) thermal resistance

N/A

°C/W

(1)

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

report, SPRA953.

6.5 Thermal Information for Dual Channel

THERMAL METRIC (1)

OPA2991, OPA2991S

UNIT

(SOIC)

DDF

(SOT-23)

DGK

(VSSOP)

DSG

(WSON)

(TSSOP)

RUG

(X2QFN)

8 PINS

10 PINS

RθJA

Junction-to-ambient thermal

resistance

130.7

143.5

176.5

77.6

185.1

142.3

°C/W

RθJC(top)

Junction-to-case (top) thermal

resistance

72.8

79.9

68.1

93.7

74.0

53.5

°C/W

RθJB

Junction-to-board thermal

resistance

74.0

61.6

98.2

43.9

115.7

68.5

°C/W

ψJT

Junction-to-top

characterization parameter

24.0

5.7

12.0

4.4

12.3

1.0

°C/W

ψJB

Junction-to-board

characterization parameter

73.3

61.3

96.7

43.9

114.0

68.4

°C/W

RθJC(bot)

Junction-to-case (bottom)

thermal resistance

N/A

19.0

N/A

°C/W

(1)

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

report, SPRA953.

6.6 Thermal Information for Quad Channel

THERMAL METRIC (1)

OPA4991

UNIT

(SOIC)

DYY

(SOT-23)

(TSSOP)

RUC

(X2QFN)

14 PINS

RθJA

Junction-to-ambient thermal resistance

101.4

110.6

131.4

125.9

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

57.6

53.7

51.8

39.8

°C/W

RθJB

Junction-to-board thermal resistance

57.3

35.3

75.8

68.0

°C/W

ψJT

Junction-to-top characterization parameter

18.5

2.2

7.9

0.8

°C/W

ψJB

Junction-to-board characterization parameter

56.9

35.0

74.8

67.8

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

N/A

°C/W

(1)

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

report, SPRA953.

OPA991, OPA2991, OPA4991

SBOS969F – OCTOBER 2019 – REVISED JANUARY 2022

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