TPS7150QPWG4

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TPS7150QPWG4 Application Field and Working Principle

The Texas Instruments TPS7150QPWG4 is a type of Linear Voltage Regulator (PMIC - Voltage Regulators - Linear). It is an adjustable low dropout linear regulator with a typical dropout of 800 mV. It offers a wide input voltage range (2.7 V to 20 V) and is ideal for applications requiring very low dropout voltage. The TPS7150QPWG4 is well suited to power portable devices, as it has a low operating current of 56 µA.

The TPS7150QPWG4 is available in a 8-pin MSOP package and is designed to support a wide range of system output voltages. The adjustable output voltage is set with an external resistor divider applied across the feedback reference pin. The device provides thermal regulation and overcurrent foldback protection and is guaranteed for operation over an extended temperature range of -40°C to 125°C.

Features and Benefits

The features and benefits of the TPS7150QPWG4 can be summarized as follows:

• 300mA output current
• Adjustable output voltage
• Very low dropout voltage (typical 800 mV)
• Wide input voltage range (2.7 V to 20 V)
• High current output accuracy: ±2%
• Thermal regulation and overcurrent foldback protection
• Small size: 8-pin MSOP package
• Long-term reliability and capability over extended temperature range from -40°C to 125°C

Applications

The TPS7150QPWG4 is suitable for various portable applications requiring very low dropout voltage, like handheld computers and digital cameras. It can also be used to power automotive embedded systems and instrumentation, mobile phones and portable digital media players.

Working Principle

The TPS7150QPWG4 is a Linear Voltage Regulator that operates at constant voltage. It consists of an input voltage supply, a regulator circuit, a feedback circuit and an output voltage supply. The regulator circuit is composed of a reference voltage, an error amplifier, and an external resistor divider that sets the output voltage.

The voltage to be regulated is compared to the reference voltage by the error amplifier, and the voltage difference is further amplified and sent to the output transistor. The output transistor increases or decreases the output voltage, depending on the signal from the error amplifier. The voltage across the resistor divider is used as the reference voltage, and the output voltage is set by the ratio of the resistors. The output voltage remains stable as long as the input voltage is within the operating range.

The TPS7150QPWG4 also offers thermal regulation and overcurrent foldback protection, which helps to protect the part from overloading. If the output current of the device exceeds the foldback threshold, the output voltage will decrease, limiting the output current. The thermal regulation regulates the output voltage in response to the internal temperature of the device, further protecting the device from overheating.

Conclusion

The Texas Instruments TPS7150QPWG4 is a type of Linear Voltage Regulator (PMIC - Voltage Regulators - Linear). It is an adjustable low dropout linear regulator with a typical dropout of 800 mV, a wide input voltage range (2.7 V to 20 V), and a low operating current of 56 µA. It offers features such as thermal regulation and overcurrent foldback protection and is guaranteed for operation over an extended temperature range of -40°C to 125°C. The TPS7150QPWG4 is suitable for various portable applications requiring very low dropout voltage, like handheld computers and digital cameras.

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