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1 Features

? AEC-Q100 qualified with the following results:

– Temperature grade 1: –40°C to +125°C

operating temperature range

– Extended operating temperature range: ?55°C

to +130°C

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? Resistor programmable temperature trip points

and hysteresis options

– Resistor tolerances contribute zero error

– Hysteresis options: 5°C, 10°C and 20°C

? Separate outputs for overtemperature or

undertemperature detection

– Channel A (overtemperature): +30 to +124°C,

2°C steps

– Channel B (undertemperature): –50 to +25°C,

5°C steps

? Accuracy without calibration

– ±1.5°C (maximum) from 0°C to +70°C

– ±3.0°C (maximum) from ?55°C to +130°C

? Ultra-low power consumption: 0.5 μA typical at

25°C

? Supply voltage: 1.62 to 5.5 V

? Open-drain outputs

? Trip test function enables in-system testing

? Available in a SOT-563 (1.60-mm × 1.20-mm),

6-pin package

2 Applications

? Automotive infotainment systems

– USB chargers

– Instrument clusters

– Media interface

? Cameras

? Radar/Lidar

3 Description

The TMP390-Q1 device is part of a family of ultralow

power, dual channel, resistor programmable

temperature switches that enable protection and

detection of system thermal events from –55°C

to 130°C. The TMP390-Q1 offers independent

overtemperature (hot) and undertemperature (cold)

detection . The trip temperatures (TTRIP) and thermal

hysteresis (THYST) options are programmed by two

E96-series resistors (1% tolerance) on the SETA and

SETB pins. Channel A resistors can range from 1.05

KΩ to 909 KΩ, representing one of 48 unique values.

Channel B resistors can range from 10.5 KΩ to 909

KΩ

The value of the resistor to ground on SETA input

sets the TTRIP threshold of Channel A. The value

of the resistor to ground on SETB input sets the

TTRIP threshold of Channel B, as well as the THYST

options of 5°C, or 10°C for both channels, to prevent

undesired digital output switching. When the SETB

input is connected to ground, Channel A operates with

20°C hysteresis. Resistors accuracy has no impact to

TTRIP accuracy.

To enable customer board-level manufacturing, the

TMP390-Q1 supports a trip test function where the

digital outputs are activated by exercising the SETA or

SETB pin.