1 Features

1• Resistor programmable temperature trip points

and hysteresis options

– Resistor tolerances contribute zero error

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

• Dual outputs for overtemperature detection

– Channel A (overtemperature-hot): +30 to

+124°C, 2°C steps

– Channel B (overtemperature-warm): +30 to

+105°C, 5°C steps

• Accuracy level options (maximum at +30°C to

+130°C):

– A2 Level: ±3.0°C (±1.5°C from +30°C to

+70°C)

– A3 Level: ±3.5°C (±2.0°C from +30°C to

+70°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

• DC/AC inverter

• DC/DC converter

• Temperature transmitters

• Environmental control systems (ECS)

• Power tools

• Power banks

• Lighting Control

• Industrial Robots

• Machine Vision

• STB & DVR

• WLAN/Wi-Fi access points

3 Description

The TMP392 device is part of a family of ultra-low

power, dual channel, resistor programmable

temperature switches that enable protection and

detection of system thermal events from 30°C to

130°C. The TMP392 offers dual overtemperature (hot

and warm) 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

TMP392 supports a trip test function where the digital

outputs are activated by exercising the SETA or

SETB pin.