RT9166A-25GGL

Voltage Dropout (Max):	0.58V @ 600mA (Typ)
Supplier Device Package:	SOT-223
Package / Case:	TO-261-4, TO-261AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	55dB (1kHz)
Current - Quiescent (Iq):	300µA
Current - Output:	600mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
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 to RT9166A-25GGL

The RT9166A-25GGL is a low-noise linear voltage regulator (LVR) designed to control on-chip power supply voltage levels. This voltage regulator consists of a four-terminal p-channel metal-oxide field-effect transistor (PMOSFET) operating in series regulation mode to support an output voltage of up to 25 volts.

Application Fields for RT9166A-25GGL

The RT9166A-25GGL can be used to regulate the output voltage of a variety of on-chip power supplies, including digital logic, memory, display, and RF applications. This voltage regulator can also be used to control the voltage levels of analog or mixed-signal ASICs, FPGAs, and SOCs. In addition, the RT9166A-25GGL can be used in a wide range of off-chip applications such as power supplies, AC/DC converters, DC/DC switching regulators, and servo-controls. The device is designed to ensure a constant output voltage level even in noisy and fluctuating input current environments.

Features and Benefits of RT9166A-25GGL

The RT9166A-25GGL offers a variety of features and benefits, including low noise, ultra-low quiescent currents (down to 10μA), and tight output voltage accuracy (±2%). The device also provides excellent transient response, low output impedance, and improved power efficiency. The RT9166A-25GGL is available in a variety of package types, including the TO-263, SOT-223, and SOT-26. This voltage regulator also includes a shutdown input (SDI) and enable input (EN) for improved device control and monitoring.

How RT9166A-25GGL Works

The RT9166A-25GGL operates as a linear regulator. This means that energy efficiency is lower than that of switching regulators, but noise levels and ripple voltages are much lower. The device operates by controlling an internal PMOSFET, which acts as a variable resistor. The input voltage is applied to the source of the PMOSFET, while the gate of the PMOSFET is connected to the output of the regulator. The current flowing through the PMOSFET is proportional to the voltage difference between the gate and the source. The reference voltage for the regulator is generated by an on-chip bandgap reference module. This reference voltage is compared to the output voltage of the regulator and then used to adjust the gate voltage of the PFET, thus controlling the output voltage of the regulator. When the output voltage rises above the reference voltage, the gate voltage of the PMOSFET is decreased, causing the output voltage to drop.

Conclusion

The RT9166A-25GGL is an excellent low-noise linear voltage regulator designed to control on-chip power supply voltage levels up to 25 volts. This voltage regulator is suitable for a wide range of applications, including digital logic and RF circuits, AC/DC and DC/DC converters, and servo-controls. The device offers low noise and tight output voltage accuracy, as well as ultra-low quiescent current, transient response, and improved power efficiency. Additionally, the RT9166A-25GGL includes a shutdown and enable input for improved device control.

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