TPS73233DBVRG4

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TPS73233DBVRG4 Introduction

TPS73233DBVRG4 is a member of Texas Instruments family of Linear Voltage Regulators, designed for use in applications in which very low quiescent current, very low dropout, and low noise are desired. It is a family of low-dropout (LDO) voltage regulators with a fixed 3.3V output voltage, featuring very low quiescent current in active mode and very low ground current in shutdown mode, making these ideal for automotive and other cost-sensitive applications. The TPS73233DBVRG4 also feature an advanced, high-impedance output, ultra-low-noise, and extremely low power loss during normal operation.

TPS73233DBVRG4 Applications

TPS73233DBVRG4 has a wide range of applications such as car audio, automotive infotainment systems, automotive sensor modules, automotive control systems, vehicle data systems, automotive point of sale terminals, automotive Industrial PC systems, automotive radios, and even communication systems. The TPS73233DBVRG4 is suitable for a variety of systems including but not limited to, automotive safety cameras, motor vehicles, and marine vessels. The LDO also proves to be useful in the industrial field with applications in distributed industrial control systems and heavy process control.

TPS73233DBVRG4 Working Principle

TPS73233DBVRG4 is a linear regulator which uses an internal PNP pass transistor and feedback network to regulate the output voltage. The device operates in a low-dropout (LDO) mode, which is to say that the output voltage is slightly lower than the input voltage. The regulator consists of a NPN-type bipolar transistor as the pass element, a crisp series reference, a current regulating resistor, and an output voltage feedback network. In the active mode, TPS73233DBVRG4 responds quickly to load changes, providing improved stability and shutoff for fast load changes.

The regulation loop works through the feedback network which provides information about the output voltage to the base of the pass transistor. The feedback loop achieves the desired output voltage by controlling the base current of the pass element. The loop includes a reference voltage, which is compared to the feedback voltage across the output divider network. The error signal is then fed back to the base of the pass transistor and the transistor is alternately turned on and off in order to correct the output voltage deviation.

The current regulating resistor synthesizes the base current of the pass transistor to reduce the output voltage to the desired level. The series reference voltage is then compared to the feedback voltage and is used to control the gain of the loop. Finally, the reference is used to set the accuracy of the output voltage.

Conclusion

TPS73233DBVRG4 is an excellent choice for low-current voltage regulation in automotive and other cost-sensitive applications. This device offers superior performance, featuring very low quiescent current, very low dropout voltage and low noise. With its advanced, high-impedance output, ultra-low-noise and extremely low power loss, the TPS73233DBVRG4 is an ideal choice for a variety of applications.

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