TPS7A8018DRBR

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The TPS7A8018DRBR is a low-noise linear voltage regulator that is designed to provide ultra-low noise supplies with minimal dropout voltage, fast transient response, and low-noise noise performance. The device operates from a 2.if5V to 3.2V input voltage range and provides a regulated output voltage from 0.9 to 6.0V. It is rated to deliver up to 0.8A of continuous output current with a maximum output power of 10W.

Features

• Ultra-low noise and ripple output
• Ultra-fast transient response
• Overcurrent, overtemperature and short-circuit protection
• Output voltage range from 0.9 to 6.0V
• Input voltage range from 2.5V to 3.2V
• Maximum output current of 0.8A
• Maximum output power of 10W

Application Field

The TPS7A8018DRBR is ideal for low-noise, high-efficiency applications, such as flyback converters, portable devices with limited space, and automotive applications. The device can also be used in audio applications, such as headphones, amplifiers, and active speakers, where minimal ripple and low noise performance is critical.

Working Principle

The TPS7A8018DRBR is a low-noise linear voltage regulator based on the traditional linear regulator configuration. The device works in the following way: In the first stage, the Input voltage is compared to an internal bandgap reference voltage, which is used as the reference voltage for all regulation stages. The resulting differential voltage between the input and the reference is amplified by the Error Amplifier. The output of the Error Amplifier is fed to the PWM comparator, which compares the amplified output with the internal reference voltage and the feedback voltage from the output voltage. If the output voltage is higher than the desired voltage, the PWM comparator will turn off the gate drive to the output switch. This will cause the output switch to become non-conducting and the output voltage will drop until it reaches the desired voltage. However, if the output voltage is lower than the desired voltage, the comparator will turn on the gate drive, which will cause the output switch to be conducting and the output voltage will become higher until it reaches the desired voltage. The output voltage is thus regulated.

Conclusion

The TPS7A8018DRBR is a low-noise linear voltage regulator that provides ultra-low noise supplies with minimal dropout voltage, fast transient response, and low-noise noise performance. It is ideal for low-noise, high-efficiency applications such as flyback converters and portable devices with limited space. It works by comparing the Input voltage with an internal bandgap reference voltage and regulating the output voltage by controlling the output switch through the PWM comparator.

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