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.