TPL710F33-5TR 200-mA Output,1-µA Ultra-Low Quiescent Current LDO

Overview of TPL710F33-5TR and TPS70633DBVR

The TPL710F33-5TR from 3peak is a low-dropout (LDO) voltage regulator designed to provide high performance with ultra-low output noise and low dropout voltage. It is ideal for power-sensitive applications requiring clean, stable power for sensitive components like analog-to-digital converters (ADCs) and communication modules.

The TPS70633DBVR from Texas Instruments is also a low-dropout voltage regulator, designed for providing low-noise power to low-power systems. While both devices aim at low-noise output, the TPL710F33-5TR brings advantages in lower dropout voltage, better output noise performance, and overall efficiency, making it more suitable for demanding applications.

Dropout Voltage

1. Dropout Voltage Performance:

   • The TPL710F33-5TR features an exceptionally low dropout voltage of 30 mV at a 3.3V output, ensuring that the regulator can maintain a stable output voltage even when the input voltage is very close to the output voltage. This is crucial for battery-powered systems where efficient use of available voltage is essential.

   • The TPS70633DBVR, while also offering a low dropout voltage, typically operates at a dropout of around 100 mV at a 3.3V output. This higher dropout voltage can result in more frequent input voltage fluctuations, particularly in low-voltage applications, where power efficiency is critical. The TPL710F33-5TR provides a significant advantage in terms of maintaining a stable output even under tight voltage margins.

Output Noise

2. Output Noise Characteristics:

   • The TPL710F33-5TR is designed for low-noise applications, offering an output noise performance of 3 µVRMS over a 10 Hz to 100 kHz frequency range. This makes it an excellent choice for applications that require extremely low noise, such as sensitive analog circuitry, precision measurements, and high-frequency communication systems.

   • The TPS70633DBVR typically features an output noise of 30 µVRMS over the same frequency range. While it is still suitable for general-purpose use, the TPL710F33-5TR's lower output noise provides a clear advantage in high-fidelity audio systems, precision sensors, and other applications requiring high-quality power with minimal interference.

Efficiency and Power Consumption

3. Power Efficiency and Consumption:

   • The TPL710F33-5TR offers superior power efficiency, thanks to its low dropout voltage and minimal quiescent current. With a typical quiescent current of just 30 µA, the TPL710F33-5TR is highly efficient for battery-powered systems, extending battery life while maintaining stable performance under varying load conditions.

   • The TPS70633DBVR has a slightly higher quiescent current of 45 µA, which, while still low, results in slightly higher power consumption in low-power applications. The TPL710F33-5TR's lower quiescent current ensures that more power is directed to the load rather than being consumed by the regulator itself, making it a better choice for low-power and energy-sensitive designs.

Load Regulation and Line Regulation

4. Load and Line Regulation:

   • The TPL710F33-5TR offers excellent load regulation, with a typical line regulation of 0.02% and load regulation of 0.05%. This ensures that the output voltage remains stable even as the input voltage or load conditions fluctuate. This is especially important in sensitive applications such as medical equipment, communication systems, and sensor interfaces, where precise voltage regulation is crucial.

   • The TPS70633DBVR has slightly higher load regulation and line regulation values, which may lead to minor fluctuations in the output voltage under certain load or input conditions. Although it performs adequately in most general applications, the TPL710F33-5TR provides superior voltage stability, making it more reliable for precision electronics.

Package Options and Integration

5. Packaging and Integration:

   • The TPL710F33-5TR is available in compact SOT-23-5 and SOT-89 packages, offering flexibility in design integration. The small package options allow it to be used in space-constrained systems such as portable devices, sensors, and compact power supplies.

   • The TPS70633DBVR is available in SOT-23-5, which also makes it suitable for space-constrained applications. However, the TPL710F33-5TR provides the advantage of better package efficiency, allowing for higher current output while maintaining a compact form factor. This makes it ideal for higher-performance, space-efficient designs.

Temperature Range and Reliability

6. Operating Temperature Range:

   • The TPL710F33-5TR operates across an extended temperature range of -40°C to +125°C, ensuring reliable operation in a wide variety of industrial and automotive environments. This wide range guarantees that the regulator can handle extreme temperatures, making it highly adaptable for automotive applications, temperature-sensitive systems, and outdoor sensor networks.

   • The TPS70633DBVR, while operating over a temperature range of -40°C to +125°C, tends to exhibit slightly lower tolerance for extreme temperature fluctuations in some use cases. The TPL710F33-5TR’s stronger thermal stability allows for better performance consistency in temperature-sensitive environments.

Cost-Effectiveness and Value

7. Cost-Effectiveness and Value:

   • The TPL710F33-5TR offers excellent performance at a competitive price, making it an attractive choice for applications that require high-quality low-dropout regulation without breaking the budget. Its low noise, low dropout voltage, and high efficiency contribute to a better value proposition in low-power electronics.

   • The TPS70633DBVR, while providing good performance, tends to be priced slightly higher in comparison, especially considering the TPL710F33-5TR offers superior efficiency, noise performance, and dropout voltage at a similar or lower price point. For engineers looking to optimize both performance and cost, the TPL710F33-5TR is the best value in low-noise, high-efficiency applications.

Conclusion

In conclusion, the TPL710F33-5TR from 3peak offers significant advantages over the TPS70633DBVR in terms of dropout voltage, output noise, power efficiency, and load regulation. With its ultra-low dropout voltage of just 30 mV, the TPL710F33-5TR ensures stable performance in tight voltage conditions, making it a superior choice for energy-sensitive applications. Furthermore, its low quiescent current and exceptional noise performance make it the ideal solution for precision analog systems, communication modules, and sensor interfaces.

For designs that demand high reliability, low noise, and maximum power efficiency, the TPL710F33-5TR provides the ideal solution, offering better value while maintaining superior performance compared to the TPS70633DBVR.