TMP390A3DRLT
ObsoleteULTRA-SMALL, DUAL-CHANNEL (HOT & COLD TRIP), 0.5-ΜA, RESISTOR-PROGRAMMABLE TEMPERATURE SWITCH
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TMP390A3DRLT
ObsoleteULTRA-SMALL, DUAL-CHANNEL (HOT & COLD TRIP), 0.5-ΜA, RESISTOR-PROGRAMMABLE TEMPERATURE SWITCH
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Technical Specifications
Parameters and characteristics for this part
| Specification | TMP390A3DRLT |
|---|---|
| Accuracy | 3.5 °C |
| Current - Supply | 500 nA |
| Features | Selectable Trip Point |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 130 °C |
| Operating Temperature [Min] | -55 °C |
| Output | Active Low |
| Output Function | OverTemp |
| Output Type | Open Drain |
| Package / Case | SOT-666, SOT-563 |
| Selectable Hysteresis | True |
| Switching Temperature | Programmable |
| Trip Temperature Threshold | Hot, Cold |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 1.62 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.25 | |
| 5 | $ 1.05 | |||
| 10 | $ 0.98 | |||
| 25 | $ 0.89 | |||
| 50 | $ 0.83 | |||
| 100 | $ 0.77 | |||
| Digi-Reel® | 1 | $ 1.25 | ||
| 5 | $ 1.05 | |||
| 10 | $ 0.98 | |||
| 25 | $ 0.89 | |||
| 50 | $ 0.83 | |||
| 100 | $ 0.77 | |||
| Tape & Reel (TR) | 250 | $ 0.71 | ||
| 500 | $ 0.65 | |||
| 750 | $ 0.62 | |||
| 1250 | $ 0.58 | |||
| 2500 | $ 0.57 | |||
| 6250 | $ 0.53 | |||
| 12500 | $ 0.49 | |||
| Texas Instruments | SMALL T&R | 1 | $ 0.86 | |
| 100 | $ 0.67 | |||
| 250 | $ 0.49 | |||
| 1000 | $ 0.35 | |||
Description
General part information
TMP390-Q1 Series
The TMP390-Q1 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 –55°C to 130°C. The TMP390-Q1 offers independent overtemperature (hot) and undertemperature (cold) 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 TTRIPthreshold of Channel A. The value of the resistor to ground on SETB input sets the TTRIPthreshold of Channel B, as well as the THYSToptions 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 TTRIPaccuracy.
To enable customer board-level manufacturing, the TMP390-Q1 supports a trip test function where the digital outputs are activated by exercising the SETA or SETB pin.
Documents
Technical documentation and resources
