TPS7A3901DSCR

Current - Output:	150mA
Supplier Device Package:	10-WSON (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Protection Features:	Over Temperature, Under Voltage Lockout (UVLO)
Control Features:	Current Limit, Enable, Soft Start
PSRR:	69dB (120Hz)
Current - Supply (Max):	904µA
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	0.5V @ 150mA
Voltage - Output (Max):	30V, -30V
Voltage - Output (Min/Fixed):	1.2V, 0V
Voltage - Input (Max):	±33V
Number of Regulators:	2
Output Type:	Adjustable
Output Configuration:	Positive and Negative
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS7A3901DSCR Application Field and Working Principle

The TPS7A3901DSCR is a low-noise, low-dropout linear regulator that is designed for portable, battery-powered electronic systems. It is a very important kind of voltage regulator that is used to provide a steady power supply to the application circuit, thereby ensuring stable and reliable operation. This article will discuss the application field and working principle of the TPS7A3901DSCR.

Application Field

The TPS7A3901DSCR is a versatile device that can be used in a range of different applications. It is particularly suitable for portable and battery-powered applications that require low-noise and low-cost power supplies. It can also be used in a variety of applications that require a reliable and effective means of regulating current and voltage levels. Such applications include communication equipment, device chargers, POS terminals, handheld gaming systems, medical equipment, and instrumentation.

Working Principle

The TPS7A3901DSCR is designed to regulate the output current and voltage of a power supply in order to guarantee its stability and reliability. It consists of an input current and voltage sense stages, whereby an error amplifier amplifies the difference between the output voltage and a reference voltage. The difference is then fed-back to the inputs of the sensing stages. In this way, when the output voltage increases, the error amplifier increases the negative feedback. This in turn causes the current and voltage sense stages to reduce their output current, thus decreasing the output voltage. Similarly, when the output voltage decreases, the error amplifier decreases the negative feedback, causing the sensing stages to increase their output current, thus increasing the output voltage.In addition, the device includes a soft start feature which reduces the inrush current when it powers on. This feature also aids in the stability of the device, as it eliminates the need for large capacitors. The device also includes a thermal protection system which protects it against excessive temperatures.

Conclusion

The TPS7A3901DSCR is a low-noise, low-dropout linear regulator that is designed for portable, battery-powered electronic systems. It is a very popular device that is used to regulate current and voltage levels in a variety of different applications. It consists of an input current and voltage sense stages, along with an error amplifier and a thermal protection system. Finally, its soft start feature helps to reduce inrush current and eliminate the need for large capacitors.

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