TPS73118DBVT

Current - Output:	150mA
Base Part Number:	TPS73118
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit, Reverse Polarity
Control Features:	Enable
PSRR:	58dB ~ 37dB (100Hz ~ 10kHz)
Current - Supply (Max):	750µA
Current - Quiescent (Iq):	550µA
Series:	--
Voltage Dropout (Max):	0.1V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction:

The TPS73118DBVT is a high-performance linear voltage regulator, and belongs to the family of Power Management Integrated Circuits (PMICs) from Texas Instruments (TI). It is specifically designed for low voltage regulation applications such as those found in embedded systems, networking, and communications products. It is suitable for providing bias voltages for digital and analog components, offering an exceptionally wide operating range of 3.0V to 15V, and delivering output currents up to 1A. The TPS73118DBVT is available in five output voltage versions: 1.8V, 2.5V, 3.3V, 5V and Adjustable, offering voltages ranges of 1.8V to 15V, 2.5V to 15V, 3.3V to 15V, 5V to 15V, and 4.75V to 15V respectively. In this application note, we will discuss the application field and working principle of the TPS73118DBVT.

Application Field:

The TPS73118DBVT is ideal for applications that require an extremely low noise voltage regulator, excellent line and load regulation, low quiescent current and a low dropout voltage in a small form factor. It is suitable for providing bias voltages as well as delivering output currents up to 1A. It is particularly suitable for use with digital components such as FPGAs, CPUs, MCUs and ASICs, as well as with transceivers, while its wide operating range makes it also suitable for multiple generations of products and applications.The TPS73118DBVT PMIC has been designed to provide a low noise, low dropout and low quiescent current LDO regulator for use with either 3.3V or 5V input power supplies. With an output voltage range of 1.8V to 15V, it is suitable for providing bias voltages for digital and analog components. It is ideal for embedded systems, networking and communications products in industrial and automation, telecommunications, gaming and consumer applications.

Working Principle:

The TPS73118DBVTPMIC is specifically designed for low voltage regulation applications such as embedded systems, networking and communications products. Its working principle is based on a voltage-mode control scheme. It is comprised of a low noise high accuracy bandgap reference, current mirrors, a totem-pole output stage, and several control loops.The TPS73118DBVT takes the reference voltage, usually 0.3 to 0.8V, and amplifies it to the necessary level to maintain a stable output voltage. It then passes the output voltage through a current-sense amplifier before going to the output stage. The current-sense amplifier is used to measure the output current and provides loop gain to regulate the output voltage, while the output stage provides the necessary current to maintain the desired voltage.The TPS73118DBVT PWMIC is also able to provide a very precise output voltage which, in combination with its low quiescent current, makes it ideal for many applications where low power consumption and high accuracy are required.

Conclusion:

The TPS73118DBVT is a high performance linear voltage regulator PMIC from TI, offering an exceptionally wide operating range, low noise, excellent line and load regulation and low quiescent current. It is suitable for providing bias voltages for digital and analog components, and is ideal for embedded systems, networking and communications products in industrial and automation, telecommunications, gaming and consumer applications. Its voltage-mode control scheme and current-sense amplifier enable it to provide a very precise output voltage, making it suitable for applications where battery-life and high accuracy are required.

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