SPX2954S-L-3-3

Current - Output:	250mA
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable, Power On Reset
PSRR:	--
Current - Supply (Max):	14A
Current - Quiescent (Iq):	170µA
Series:	--
Voltage Dropout (Max):	0.5V @ 250mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	30V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tube

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Introduction
The SPX2954S-L-3-3 is a linear voltage regulator and is part of the PMIC (Power Management Integrated Circuit) family. This voltage regulator is designed to regulate the output voltage for electronic devices. It is designed to maintain a constant output voltage, regardless of the input voltage level, to ensure the consistent performance of the device. The SPX2954S-L-3-3 is a highly efficient and low power linear voltage regulator, making it suitable for a wide range of applications, including but not limited to Industrial, Automotive, Consumer Electronics and Medical Electronics.Applications
The SPX2954S-L-3-3 is most commonly used in automotive applications where a reliable and accurate output voltage is required for electronic devices operating under extreme environmental conditions. It is also advantageous for applications where noise sensitivity is an issue and where a low total power dissipation is desired. Other applications where the SPX2954S-L-3-3 can be used include consumer electronics, industrial devices and medical electronics. Additionally, it can be used in other applications such as instrumentation, robotics, power distribution, military applications and alternative energy systems.Features
The SPX2954S-L-3-3 linear voltage regulator is a low-noise, low-power device that offers high efficiency and a wide bandgap. It has an adjustable voltage range of 0.8 V to 3.3 V, an operating temperature range of -40°C to +150°C, and a maximum power dissipation at 25°C of 1.77 W. It also boasts a fast transient response of up to 10 ms and a low noise level of 50 dB. Furthermore, it has a wide range of protection features such as current limiting, over voltage & reverse polarity protection, thermal shutdown and output short circuit protection.Working Principle
The SPX2954S-L-3-3 linear voltage regulator works by utilizing a power pass transistor and an Adjustable Precision Toggle (APT) transducer to control output current. The power pass transistor acts as a variable resistor, and together with the APT transducer, they form a feedback loop which maintains a constant output voltage level, regardless of input voltage fluctuations. Furthermore, the power pass transistor ensures that the output voltage of the regulator never exceeds a specific level, even if the input voltage is higher than its range.Conclusion
In conclusion, the SPX2954S-L-3-3 linear voltage regulator is a highly efficient and low-power device that offers a wide range of features, making it suitable for a wide variety of applications. It utilizes a power pass transistor and an APT transducer to control output current, thereby maintaining a constant output voltage, regardless of the input voltage level. It has a low noise level and fast transient response, as well as a range of protection features for added safety.

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