6.3 Recommended Operating Conditions

Over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

VCC

Supply voltage

PVCC, AVCC

3.5

14.4

V

VIH

High-level input voltage

SD/ FAULT (1), MUTE, GAIN_SEL, MODE_SEL

2

AVCC

V

VIL

Low-level input voltage

SD/ FAULT, MUTE, GAIN_SEL, MODE_SEL(2)

0.8

V

VOL

Low-level output voltage

SD/ FAULT, RPULL-UP =100 kΩ, PVCC = 14.4 V

0.8

V

IIH

High-level input current

SD/ FAULT, MUTE, GAIN_SEL, MODE_SEL, VI = 2 V, AVCC = 12 V

50

µA

IIL

Low-level input current

SD/ FAULT, MUTE, GAIN_SEL, MODE_SEL, VI = 0.8 V, AVCC = 12 V

5

µA

TA

Operating free-air temperature(3) (4)

–10

85

°C

TJ

Operating junction temperature(3)

-10

150

°C

(1)

Set SD/ FAULT to high level, make sure the pull-up resistor is larger than 4.7 kΩ and smaller than 500 kΩ

(2)

Set GAIN_SEL and MODE_SEL to low level, make sure pull down resistor<10 kΩ

(3)

The TPA3138D2 incorporates an exposed thermal pad on the underside of the chip. This acts as a heatsink, and it must be connected

to a thermally dissipating plane for proper power dissipation. Failure to do so may result in the device going into thermal protection

shutdown. See TI Technical Briefs SLMA002 for more information about using the TSSOP thermal pad.

(4)

TPA3139D2 supports -40°C ~85°C ambient temperature range with ≤12 V operating PVDD range.

6.4 Thermal Information

THERMAL METRIC(1)

TPA3139D2

UNIT

RGE (QFN)

24 PINS

RθJA

Junction-to-ambient thermal resistance

37.4

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

35.1

°C/W

RθJB

Junction-to-board thermal resistance

16.8

°C/W

ψJT

Junction-to-top characterization parameter

0.9

°C/W

ψJB

Junction-to-board characterization parameter

16.7

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

7.3

°C/W

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

TPA3139D2

SLOS810A – OCTOBER 2019 – REVISED AUGUST 2020

www.ti.com

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