TLV70031DSER

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Introduction

TLV70031DSER is a low-voltage linear voltage regulator from Texas Instruments that is designed for a wide range of power management applications. It provides up to 200mA of output current at a maximum dropout voltage of 1.15V and offers excellent power supply rejection ratio (PSRR) of up to 80dB. The regulator also features under-voltage lockout (UVLO), over-current protection (OCP) and thermal shutdown (TSD) to ensure safe operation. This article will cover the application field of TLV70031DSER and its working principle.

Application Field

The TLV70031DSER is an ideal choice for a variety of power management applications due to its wide operating range and excellent PSRR. It can be used to regulate voltage in devices such as portable sensors, smart wearables and IoT (Internet of Things) nodes. It is also suitable for powering low-power microcontrollers, FPGAs and other logic circuits in portable and handheld electronic systems. Additionally, the regulator’s low quiescent current makes it the ideal choice for battery-powered applications.

Working Principle

The TLV70031DSER is a linear regulator, which means that it operates on the principle of Zener-based feedback control. The regulator works by sensing the voltage at the output and comparing it to a fixed reference voltage, typically 1.22V. If the output voltage is lower than the reference voltage, then the regulator will increase the output current to try and raise the output voltage. If the output voltage is higher than the reference voltage, the regulator will decrease the output current to try and reduce the output voltage.

The TLV70031DSER is also protected against electrical and thermal overloads. The OCP circuit will shut down the regulator’s output when the output current exceeds the programmed current limit. The TSD circuit will shut down the regulator’s output when the internal temperature exceeds a certain threshold. Lastly, the UVLO circuit will shut down the regulator’s output when the input voltage is below a certain threshold. Once these conditions are resolved, the regulator will automatically resume operation.

Conclusion

The TLV70031DSER is a low-voltage linear voltage regulator that is ideal for a variety of power management applications. Its wide operating range and low quiescent current make it an ideal choice for battery-powered systems. It also offers excellent PSRR and is protected against electrical and thermal overloads. Thus, it is a robust and efficient voltage regulator for portable and handheld systems.

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