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The TPS73625QDCQRM0 is an automotive-grade 2.5 V, 400 mA low-dropout (LDO) linear voltage regulator from Texas Instruments, built on a cap-free NMOS topology with reverse current protection. It fits automotive and industrial designers who need a stable, low-noise 2.5 V rail that holds accuracy across temperature without depending on a specific output capacitor.
The part belongs to TI's TPS736xx-Q1 family, qualified to AEC-Q100 Grade 1 for high-reliability automotive use. It ships in a 6-pin SOT-223 (DCQ) surface-mount package, is RoHS-compliant and Pb-free, and delivers 75 mV typical dropout at full load. The features below explain what that means in a real design.
Key Features of the TPS73625QDCQRM0
Automotive AEC-Q100 Grade 1 qualification
The device is qualified to AEC-Q100 Grade 1, with performance specified across the full automotive operating temperature range. That makes it a direct fit for in-cabin and under-hood electronics that require documented reliability grading.
2.5 V fixed output at up to 400 mA
It supplies a regulated 2.5 V rail at up to 400 mA of load current. Initial accuracy is 0.5%, with 1% overall accuracy across line, load, and temperature.
Ultra-low dropout, cap-free NMOS design
The NMOS pass element gives a typical dropout of just 75 mV at full load, so the regulator holds regulation even when input and output voltages are close. The topology is stable with any output capacitor value or type, and even with no output capacitor at all.
Low output noise
The regulator delivers low output noise (30 uV RMS typical, 10 Hz to 100 kHz) and includes a noise reduction pin for further filtering. This suits noise-sensitive loads such as VCOs, ADCs, and RF front ends.
Reverse current protection and built-in safeguards
The NMOS pass element blocks current flow from output back to input, and the device integrates thermal shutdown and foldback current limiting. These protections guard the regulator during fault and short-circuit conditions.
SOT-223 surface-mount package
The part is supplied in a 6-pin SOT-223 (DCQ) package, ready for automated PCB assembly. It is RoHS-compliant and Pb-free.
Applications of the TPS73625QDCQRM0
This part is typically used in:
- Automotive infotainment systems
- ADAS and camera modules
- Instrument clusters and body control modules
- Point-of-load regulation for DSPs, FPGAs, and ASICs
- Microprocessor and microcontroller power supplies
- Post-regulation for switching power supplies
- Noise-sensitive analog and RF circuitry, including VCOs
- Portable and battery-powered equipment
- Sensor and data-acquisition front ends
- Industrial control electronics