RT9011-MQGQWC

Voltage Dropout (Max):	0.33V @ 300mA, 0.33V @ 300mA
Supplier Device Package:	6-WDFN (1.6x1.6)
Package / Case:	6-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	70dB ~ 38dB (100Hz ~ 300kHz)
Current - Quiescent (Iq):	80µA
Current - Output:	300mA, 300mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V, 3.1V
Voltage - Input (Max):	5.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

RT9011-MQGQWC is a voltage regulator integrated circuit produced by Richtek Technology. It is a low dropout linear regulator that provides accurate circuit regulation over a wide range of operating voltages and power loadings. It offers adjustable output voltage, low dropout voltage, high power efficiency, fast transient response, short circuit protection, adjustable current limitation and thermal shutdown. It is a high performance, flexible, and low cost voltage regulator solution for consumer, industrial, automotive and other applications.

Features

The RT9011-MQGQWC is a high performance, low cost voltage regulator solution with extensive features. It offers adjustable output voltage from 0.8V to 5.5V, low dropout voltage of 350mV, high power efficiency up to 95%, fast transient response time of 0.4µs, adjustable current limiting, short-circuit protection and thermal shutdown. Its integrated circuitry also provides high performance, low noise operation and excellent thermal stability. The device is available in space-saving MSOP-8 package, making it ideal for applications with limited board space.

Application Field

The RT9011-MQGQWC voltage regulator has a wide range of applications in consumer, automotive, industrial, and other sectors. In consumer, it can be used in gaming systems, cameras, radio receivers, printers, desktops and laptops, automotive and communication systems, among many others. In automotive industry, the device is used in controlling motors, electric windows, on board charging systems and car audio systems. It can also be used in industrial sector including laboratory power supplies, equipment powering, line regulation and voltage stabilization.

Working Principle

The RT9011-MQGQWC voltage regulator works on the principle of linear regulation. This works by controlling the output voltage in proportion to the changes in the input voltage. The device consists of a voltage reference, error amplifier, transconductance current-sense buffer, series pass PMOS power transistor and current limiting circuitry. The feedback from the output is fed back to the amplifier through the voltage reference and error amplifier. This feedback helps the regulator to maintain the output voltage at a constant level, regardless of changes in input voltage, load or temperature. The current limiting circuitry limits the current in the device and prevents it from drawing more current than specified, while the thermal protection feature shuts down the device in case of over-temperature.

Conclusion

The RT9011-MQGQWC is a high quality, low cost voltage regulator suitable for a wide range of applications from consumer, industrial, automotive and other sectors. It offers adjustable output voltage, low dropout voltage, high power efficiency, fast transient response, short circuit protection, adjustable current limitation and thermal shutdown. It is available in a small MSOP package which makes it ideal for applications with limited space, and its linear regulation principle ensures efficient operation over a wide voltage input and temperature range.

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