TMP112-Q1 and TMP112D-Q1 Automotive Grade High-Accuracy, Low-Power,

Digital Temperature Sensor in SOT563 and X2SON Packages

1 Features

• AEC-Q100 qualified for automotive applications:

– TMP112-Q1/TMP112D-Q1: –40°C to 125°C

– Device HBM ESD classification level 2

– Device CDM ESD classification level C6

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• TMP112-Q1 Accuracy without calibration:

– ±0.5°C (Max) over 0°C to 65°C

– ±1°C (Max) over –40°C to 125°C

• TMP112D-Q1 Accuracy without calibration:

– ±0.4°C (Max) over 0°C to 65°C

– ±0.5°C (Max) over -25°C to 85°C

– ±0.7°C (Max) over –40°C to 125°C

• Low quiescent current:

– TMP112-Q1: 10μA active (Max), 1μA shutdown

(Max)

– TMP112D-Q1: 9μA active (Max), 0.35μA

shutdown (Max)

• Available packages:

– SOT563 package (1.6mm × 1.6mm)

– X2SON package (0.8mm × 0.8mm)

• Supply range: 1.4V to 3.6V

• Resolution: 12 bits

• Digital output: SMBus, two-wire and I2C interface

compatibility

2 Applications

• Automotive

• Infotainment & cluster

• Head unit & digital cockpit

• In-cabin sensing

• Battery management unit

• Vehicle control unit (VCU)

• Surround view system ECU

SCL

GND

ALERT

2

4

1

ADD0

V+

6

3

5

10nF

Two-Wire

Host Controller

TMP112-Q1

TMP112D-Q1

1.4V to 3.6V

SDA

Pullup Resistors

Supply Bypass

Capacitor

Supply Voltage

5kΩ

Simplified Schematic (SOT563 Package)

3 Description

The TMP112-Q1 and TMP112D-Q1 devices are

digital temperature sensors designed for NTC/PTC

thermistor replacement where high accuracy is

required. These devices offer an accuracy of ±0.4°C/

±0.5°C without requiring calibration or external

component signal conditioning. TMP112-Q1 and

TMP112D-Q1 are highly linear and do not require

complex calculations or lookup tables to derive the

temperature. The calibrating for improved accuracy

feature in TMP112-Q1 (see the Calibrating for

Improved Accuracy section) allows users to calibrate

for an accuracy as good as ±0.17°C. The on-chip 12-

bit ADC offers resolutions down to 0.0625°C.

TMP112-Q1 and TMP112D-Q1 come with 0.8mm ×

0.8mm X2SON (DPW) and 1.6mm × 1.6mm SOT563

(DRL) packages. These devices feature SMBus™,

two-wire and I2C interface compatibility, and allow up

to four devices on one bus along with SMBus alert

function. These devices are specified to operate over

1.4V to 3.6V supply voltage. The maximum quiescent

current is around 10µA over the full operating range.

Package Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

TMP112-Q1

TMP112D-Q1

SOT563 (6)

1.60mm × 1.60mm

TMP112D-Q1

X2SON (5)

0.8mm × 0.8mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

Diode

temp.

sensor

ΔΣ

ADC

Oscillator

Control

logic

Serial

interface

Config.

and temp.

register

TMP112-Q1

Temperature

SCL

1

3

6

4

ALERT

SDA

GND

2

5

V+

ADD0

Block Diagram (SOT563 Package)

TMP112-Q1, TMP112D-Q1

SLOS887G – SEPTEMBER 2014 – REVISED MAY 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.