RT9161A-28GV

Voltage Dropout (Max):	1V @ 500mA
Supplier Device Package:	SOT-23-3
Package / Case:	TO-236-3, SC-59, SOT-23-3
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	--
Current - Output:	500mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V
Voltage - Input (Max):	12V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The RT9161A-28GV is a Linear regulator IC, developed and manufactured by Richtek Technology Corporation. It features a wide operating range for its 7-25V input voltage, with a maximum output current rating up to 1 A. It is primarily used to provide stable DC voltage with low power dissipation and compensated accuracy.

Application Field

The RT9161A-28GV has a wide range of applications across many different types of electronic devices. It\'s most frequent applications include:

• Consumer electronics - This includes televisions, set-top boxes, game consoles, portable media players, DVD players and home theater systems.
• Industrial applications - This includes telecommunications, automotive, medical and industrial control systems.
• Computers - This includes laptops, desktop PCs, tablet PCs and servers.
• Networking - This includes both wired and wireless networking devices.
• Solar energy - This includes solar inverters, batteries, controllers and other devices.
• LED Lighting - This includes both indoor and outdoor LED lighting systems.

The RT9161A-28GV can also be used in other areas of electronics, such as audio amplifiers, robotic systems, robotics, instrumentation and data acquisition circuits.

Working Principle

The RT9161A-28GV is designed to provide a regulated DC voltage from a wide range of input voltages (7-25V). This is done using a high-gain voltage-level-shifter circuit, which operates as a linear regulator.The voltage-level-shifter works by using an external resistor to set the required output voltage. This resistor forms part of a feedback loop which compares the output voltage with the reference voltage. When the output voltage differs from the reference voltage, the linear regulator will adjust the output voltage to make sure it’s at the desired level.In order to maintain a consistent output voltage, the RT9161A-28GV has an internal power supply rejection ratio voltage which is set slightly higher than the output voltage. This prevents any changes in the input voltage from affecting the output voltage.The RT9161A-28GV also has a thermal shut down protection, which triggers when the internal temperature reaches a certain threshold. This helps to keep the device cool, and also helps to prevent any damage caused by excessive heat.

Conclusion

The RT9161A-28GV is a versatile Linear regulator IC which can be used in a wide range of applications. It features a wide operating range for its 7-25V input voltage, with a maximum output current rating up to 1 A. It is designed to maintain a consistent output voltage, thanks to its high-gain voltage-level-shifter circuit, and its internal power supply rejection ratio voltage. It also has thermal shut down protection, which helps to protect the device from excessive heat.

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