Table 7-1. TMP390 Channel A Threshold Setting (continued)

CHANNEL A (HOT)

TRIP TEMPERATURE

(°C)

CHANNEL A NOMINAL 1%

RESISTORS (KΩ)

CHANNEL A (HOT) TRIP

RESET TEMPERATURE (°C) FOR

HYSTERESIS = 5°C

CHANNEL A (HOT) TRIP

RESET TEMPERATURE (°C) FOR

HYSTERESIS = 10°C

124

909

119

114

Note

When the SETA pin is grounded or left floating during the device power up, the OUTA pin always stays

low. The Channel B functionality is not affected by the SETA channel.

Table 7-2. TMP390 Channel B Threshold and Hysteresis Setting

CHANNEL B

(COLD) TRIP

TEMPERATURE (°C)

CHANNEL B NOMINAL 1% RESISTORS (KΩ)

CHANNEL B (COLD) TRIP RESET TEMPERATURE (°C)

HYSTERESIS = 5°C

HYSTERESIS = 10°C

HYSTERESIS = 5°C

HYSTERESIS = 10°C

–50

90.9

105

–45

–40

–45

78.7

121

–40

–35

–40

68.1

140

–35

–30

–35

59.0

162

–30

–25

–30

51.1

187

–25

–20

–25

44.2

215

–20

–15

–20

38.3

249

–15

–10

–15

33.2

287

–10

–5

–10

28.7

332

–5

0

–5

24.9

383

0

5

0

21.5

442

5

10

5

18.7

511

10

15

10

16.2

590

15

20

15

14.0

681

20

25

20

12.1

787

25

30

25

10.5

909

30

35

7.3.2 Trip Test

The purpose of the trip test is in system manufacturing test without putting the TMP390 through costly

temperature verification of the assembly of TMP390 and pullup resistors. When the SETA or SETB pin is set

to a high logic level, the associated output goes low. When the input pin level goes low, the output goes to its

previous condition before the trip test. The trip test does not affect the current condition of the device. The trip

test signals should stay above 0.8 × VDD for logic high and below 0.2 × VDD for logic low.

The trip test operation is shown in Figure 7-2. The trip test must be performed with a single toggle when the

device is operating at a temperature that will not cause the corresponding output to trip. The trip test is intended

for production testing after assembly, and must not be used as a functional feature.

www.ti.com

TMP390

SBOS904A – MAY 2019 – REVISED AUGUST 2020

Copyright © 2022 Texas Instruments Incorporated

Submit Document Feedback

9

Product Folder Links: TMP390