PQ09RD11

Voltage Dropout (Max):	0.5V @ 500mA
Supplier Device Package:	TO-220-4
Package / Case:	TO-220-4
Mounting Type:	Through Hole
Operating Temperature:	-20°C ~ 80°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	55dB (120Hz)
Current - Quiescent (Iq):	10mA
Current - Output:	1A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	9V
Voltage - Input (Max):	20V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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Introduction

The PQ09RD11 is a Linear Voltage Regulator Module (LVRM) belonging to the Power Management Integrated Circuit (PMIC) family. LVRMs ensure the system output voltage is stable, reliable, and cost-effective throughout the entire system lifecycle. The PQ09RD11 is a low-cost, stand-alone regulator module, which is capable of providing an output voltage in the range of 0.9V to 1.1V.

Application Field

The PQ09RD11 is designed to protect sensitive electronics from external disturbances, such as a voltage surge or a drop in supply voltage. It is used in many industrial and consumer applications. It is most typically used in the power supply of microcontroller systems. Some of the applications of the PQ09RD11 include automotive electronics, Solar energy conversion systems, power back-up devices, battery operated equipment, home appliance control systems, and medical imaging machines.

Working Principle

The PQ09RD11 works on the principle of Linear voltage regulation. It uses a three-terminal voltage regulator IC to convert an input voltage into a regulated output voltage of 0.9V to 1.1V. The output voltage is maintained even at a changing input voltage and load current by adjusting the amount of current sent to the load.The PQ09RD11 uses two external components—a current limiting resistor and a ceramic capacitor to filter out high frequency noises. The resistor is used to limit the amount of current that the module can draw from the input, while the capacitor is used to filter the noise and provide power-good indication. The voltage drop between the input and output is regulated using the VOUT, a proprietary control input. The VOUT pin supplies the regulator IC with a varied voltage from 0V to 0.8V, which is synchronized to the output voltage. By varying the VOUT, the regulator IC adjusts the amount of current sent to the load, thus maintaining a constant output voltage.

Conclusion

The PQ09RD11 is a low-cost, stand-alone regulator module, which can provide a regulated and stable output voltage ranging from 0.9V to 1.1V. It is designed to protect sensitive electronics from external disturbances, such as voltage surges or drops in input voltage. It is used in many industrial and consumer applications such as automotive, consumer, and medical device electronics. The PQ09RD11 works on the principle of Linear voltage regulation and uses two external components—a current limiting resistor and a ceramic capacitor to filter out high frequency noises.

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