Model No: TMP708AIDBVR

Texas Instruments TMP708AIDBVR

Manufacturer: Texas Instruments
SEMICON NO.: TMP708AIDBVR
Package: SOT-23-5
Stock: In stock
Description: IC Temperature Switch Thermostat
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 Mfr   Texas Instruments 
 Device Type Resistor-Programmable Temperature Switch / Thermostat    
 Threshold Accuracy ±0.5°C (Typ), ±3°C (Max)    
 Switching Temperature Programmable via External 1% Resistor    
 Output Function  OverTemp (Active Low)    
 Output Type Open-Drain, Active Low    
 Max Output Current (IOL) 20 mA    
 Supply Voltage (VCC) 2.7 V to 5.5 V    
 Supply Current (IQ 40 µA (Ty)    
 Operating Temperature -40°C to +125°C    
 Package SOT-23-5
 Mounting Type Surface Mount
 Compliance    
 RoHS Compliant
TMP708AIDBVR temperature switch
The TMP708AIDBVR from Texas Instruments is a fully integrated, resistor‑programmable temperature switch whose trip threshold is set by a single 1% external resistor across the full operating range, providing an open‑drain, active‑low output that can directly drive logic, reset pins, or power‑enable inputs without software intervention. The device operates from a 2.7V to 5.5V supply, delivering typical threshold accuracy of ±0.5°C and a guaranteed maximum of ±3°C between 60°C and 100°C, while typically drawing only 40µA of quiescent current, which minimizes load on battery‑powered or always‑on monitoring circuits. A pin‑selectable hysteresis option of 10°C or 30°C adds robust noise immunity against oscillation near the trip point and accommodates both tight regulation and coarse over‑temperature protection scenarios, making the TMP708AIDBVR well suited for fan control, over‑temperature shutdown, and hardware thermal protection in computers, servers, industrial, and medical equipment.
Housed in a 5‑pin SOT‑23 (DBV) package, the TMP708AIDBVR is rated for a wide operating temperature range of −40°C to +125°C, supporting reliable deployment in harsh industrial and automotive under‑hood environments when used with proper external protection and layout. The open‑drain output stage can sink up to 20mA, allowing direct interfacing with CMOS logic, microcontrollers, or optocouplers, and the device is specified to maintain deterministic reset behavior down to VCC = 0.8V, ensuring predictable system state during power‑up and brown‑out conditions. The small SOT‑23 footprint and tape‑and‑reel packaging (AIDBVR variant) facilitate high‑density, automated PCB assembly in space‑constrained applications such as DIMM thermal monitoring, power‑supply overcurrent/overtemperature protection, and battery‑management systems.
Alternative Equivalent Models
● TMP709AIDBVR: A pin‑compatible resistor‑programmable temperature switch from TI with 2°C or 10°C pin‑selectable hysteresis and the same 2.7V–5.5V supply range, offering tighter hysteresis options for applications that prefer smaller hysteresis windows than TMP708’s 10°C/30°C options.
● MAX6509CAUK‑T: A Maxim Integrated (now ADI) resistor‑programmable SOT temperature switch with 2°C or 10°C selectable hysteresis, open‑drain output, and 2.7V–5.5V operation, providing a direct alternative with slightly lower typical supply current and different output configuration options.
● LM26CIM5‑SHA/NOPB: A TI factory‑preset SOT‑23‑5 thermostat with fixed trip point and 2°C/10°C pin‑selectable hysteresis, offering a simpler fixed‑threshold alternative where resistor programming is not required and an analog VTEMP output is available for diagnostics.