1 Features

? 1-Wire? interface with multi-drop shared bus and

cyclic redundancy check (CRC)

? Bus powered with operating voltage: 1.7 V to 5.5 V

? IEC 61000-4-2 ESD for 8-kV contact discharge

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? High-accuracy digital temperature sensor

– TMP1827

? ±0.2°C (maximum) from +10°C to +45°C

? ±0.3°C (maximum) from –40°C to +105°C

? ±0.4°C (maximum) from –55°C to +150°C

– TMP1827N

? ±0.9°C (maximum) from –55°C to +150°C

? Temperature measurement current: 94 μA

? Shutdown current: 1.3 μA

? 16-bit temperature resolution: 7.8125 m°C (1 LSB)

? Fast data rates of 90 kbps in overdrive speed

? Flexible user programmable short address modes

for faster device address

? SHA-256-HMAC authentication scheme

– FIPS 180-4 compliant Secure Hash

Implementation

– FIPS 198-1 compliant HMAC Implementation

? 2Kb EEPROM features:

– Write operation in 64-bit block size

– Continuous read mode

– Read with write protection with 256-bit page

size

– Authenticated write protection mode with 256-

bit page size

– Programming current: 178 μA

? NIST traceable factory-programmed non erasable

64-bit identification number for device addressing

? Four configurable open-drain digital input-output

and temperature alert

2 Applications

? Factory automation and control

? Appliances

? Medical accessories

? CPAP machines

? Battery charger ICs

? EV charging infrastructure

? LED lighting

? Temperature transmitters

? Cold chain

3 Description

The TMP1827 is a high-accuracy, 1-Wire compatible

digital output temperature sensor with integrated 2Kb

EEPROM, SHA-256-HMAC authentication scheme

and a wide operating temperature range from –55°C

to +150°C. The TMP1827 provides a high accuracy

of ±0.1°C (typical)/±0.2°C (maximum) across the

temperature range of +10°C to +45°C. Each device

comes with a factory programmed 64-bit unique

identification number for addressing and NIST

traceability. The TMP1827 supports both standard

speed for legacy application and overdrive mode

with 90-kbps data rate for low latency communication

across a wide voltage range of 1.7 V to 5.5 V.

In the simplest mode of operation, the TMP1827 1-

Wire interface, with an integrated 8-kV IEC-61000-4-2

ESD protection on the data pin, requires only a single

connection and a ground return in bus powered mode,

which simplifies and reduces cost by reducing the

number of wires and external protection components.

Additionally, there is the VDD power pin also available

for applications that may want to have a dedicated

power supply.