TMP390 - Texas Instruments

TMP390 Resistor-Programmable Temperature Switch

The TMP390 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 –50°C to 130°C. The TMP390 offers independent overtemperature (hot) and undertemperature (cold) detection . The trip temperatures (TTRIP) and thermal hysteresis (THYST) options .

Features

• 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 level options (maximum at −55°C to +130°C):
  – A2 Level: ±3.0°C (±1.5°C from 0°C to +70°C)
  – A3 Level: ±3.5°C (±2.0°C from 0°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 t.