TPS7B4253QDDARQ1

Current - Output:	300mA
Supplier Device Package:	8-SO PowerPad
Package / Case:	8-PowerSOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Control Features:	--
PSRR:	70dB (100Hz)
Current - Supply (Max):	400µA
Current - Quiescent (Iq):	18µA
Series:	Automotive, AEC-Q100
Voltage Dropout (Max):	0.52V @ 200mA
Voltage - Output (Max):	40V
Voltage - Output (Min/Fixed):	1.5V
Voltage - Input (Max):	40V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS7B4253QDDARQ1 Application Field and Working Principle

Introduction to TPS7B4253QDDARQ1

The TPS7B4253QDDARQ1 is a high-performance low-noise, low-dropout linear voltage regulator. It is part of Texas Instruments\' TPS7B4xxx series of high-efficiency low-noise low-dropout linear voltage regulators designed for a wide range of applications. The TPS7B4253QDDARQ1 linear voltage regulator offers an input voltage range of 0.8 V to 6 V and an adjustable output voltage range of 0.9 V to 5.5 V with a maximum output current of 400 mA. It offers an exceptionally low dropout voltage of 40 mV at its maximum output current, making it an ideal choice for low voltage applications such as battery hooked up systems.In addition to excellent performance, the TPS7B4253QDDARQ1 boasts excellent thermal performance and supports a wide temperature range of -40°C to 85°C. It also has two enable pins for remote control, making it the perfect choice for a wide range of applications.

Applications of TPS7B4253QDDARQ1

The TPS7B4253QDDARQ1 linear voltage regulator can be used in a wide range of applications, such as post-regulation for single-cell Li-ion and Li-polymer battery applications, pocket audio, portable consumers, and more. It is especially useful when used in battery-powered applications such as portable computers, cell phones, and personal digital assistants (PDAs), as its low dropout voltage ensures that the output voltage remains steady and ripple-free while the battery is running low. The TPS7B4253QDDARQ1 is also invaluable in portable audio applications, as the low noise operation ensures the distortion-free playback of digital audio signals. The low-noise operation also ensures that the signal being delivered is as clean as possible, resulting in crystal-clear sound.

Working Principle of TPS7B4253QDDARQ1

The TPS7B4253QDDARQ1 linear voltage regulator works on the principle of voltage regulation. It has two main components – the error amplifier and the pass transistor.The error amplifier compares the output voltage to an internal reference voltage and generates a control signal for the pass transistor. The pass transistor acts as a switch to regulate the flow of current from the input to the output. When the input voltage is higher than the output voltage, the error amplifier sends a signal to the pass transistor, which then allows current to flow from the input to the output. When the output voltage is higher than the reference voltage, the error amplifier sends a signal to the pass transistor, which then shuts off the current flow from the input to the output. The combination of the error amplifier and the pass transistor allows the TPS7B4253QDDARQ1 to effectively regulate the output voltage, ensuring the output voltage remains steady and ripple-free.

Conclusion

The TPS7B4253QDDARQ1 is an efficient low-noise, low-dropout linear voltage regulator, making it an ideal choice for applications requiring an adjustable output voltage and low power consumption, such as battery-operated systems and portable audio solutions. Its excellent thermal performance and wide temperature range make it suitable for a wide range of applications, while its two enable pins allow for remote control of the device. The combination of the error amplifier and pass transistor allows for effective voltage regulation, ensuring the output voltage remains steady and ripple-free.

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