RT9074-33GG

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A RT9074-33GG is a linear voltage regulator integrated circuit (IC) with a low dropout voltage regulator (LDO). It is designed to provide a highly accurate, low power and low input-output voltage differential (dropout) power supply solution for portable applications. RT9074-33GG is specifically designed to handle applications where low quiescent current is desired and where input and output voltages are not closely matched.

Application field

It can be used in applications such as digital cameras, cell phones, LCD displays, imaging systems, PDAs and game consoles.

Also, RT9074-33GG can be used to power supply systems employing digital signal processors, controllers, and battery-powered equipment.

Working principle

The linear voltage regulator IC operates by comparing the output of an error amplifier against a reference voltage. The output voltage is set by an external resistor divider network.

The voltage regulator maintains a constant output voltage over a wide range of input-output common-mode voltages and line transients. The output current is limited by controlling the output transistor.

The RT9074-33GG features a wide input voltage range of 2.6V to 15V. The output voltage is adjustable in different ranges (1.2V to 7V, 1.5V to 7V and 2.5V to 7V) and accuracy is guaranteed to +/-3%.

The device has a built-in over-current protection circuit, with a release current at ~11mA and a shut-down current at ~20mA.It is also designed to protect the output from short circuit, with a short circuit protection current of 500mA.

In terms of performance in dropout operation, the RT9074-33GG provides less than 200mV output voltage drop at a 1A load and a 3V input voltage.

The RT9074-33GG is available in an SOT-223-6 package and is also capable of supporting up to 1.2A load current.

Conclusion

In conclusion, the RT9074-33GG is an excellent device for applications requiring an adjustable low-dropout voltage regulator. It is capable of providing high accuracy, low power output and low input-output voltage differential (dropout) power supply solutions for portable applications. It also features built-in over-current protection circuit and short circuit protection.

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