TI TMP392A2DRLR

The TMP392 device belongs to an ultralow-power, dual-channel, resistor-programmable temperature switch family that provides protection and detection of system overtemperature events in the range of 30°C to 130°C. The TMP392 offers dual overtemperature (hot, warm) detection. The trip temperature (T_TRIP) and thermal hysteresis (T_HYST) options are programmable via two E96-series resistors (1% tolerance) located at the SETA and SETB pins. Channel A resistor values range from 1.05KΩ to 909KΩ with 48 discrete values. Channel B resistor values range from 10.5KΩ to 909KΩ. The resistor-to-ground value at the SETA input sets the T_TRIP threshold for Channel A. The resistor-to-ground value at the SETB input sets the T_TRIP threshold for Channel B. The T_HYST option for both channels can be set to 5°C or 10°C to prevent unwanted digital output toggling. When the SETB input is grounded, Channel A operates with 20°C of hysteresis. Resistor accuracy has no effect on T_TRIP accuracy. To enable board-level manufacturing, the TMP392 supports a trip test function by activating the digital output through assertion of the SETA or SETB pin function.

• Resistor-programmable temperature trip point and hysteresis options
• Zero error achievable with resistor tolerance
• Hysteresis options: 5℃, 10℃, and 20℃
• Dual output for overtemperature detection
• Channel A (overtemperature - hot): +30 to +124℃, in 2℃ steps
• Channel B (overtemperature - warm): +30 to +105℃, in 5℃ steps
• Accuracy grade options (maximum over +30℃ to +130℃ range):
  • Grade A2: ±3.0℃ (±1.5℃ over +30℃ to +70℃)
  • Grade A3: ±3.5℃ (±2.0℃ over +30℃ to +70℃)
• Ultra-low power consumption: 0.5μA (typical) at 25℃
• Supply voltage: 1.62 to 5.5V
• Open-drain output

• DC/AC inverters
• DC/DC converters
• Temperature transmitters
• Environmental control systems (ECS)
• Power tools
• Mobile power supplies
• Lighting control
• Industrial robots
• Machine vision
• STB and DVR
• WLAN/Wi-Fi access points