PQ12DZ11J00H

Voltage Dropout (Max):	0.5V @ 500mA
Supplier Device Package:	SC-63
Package / Case:	TO-252-6, DPak (5 Leads + Tab)
Mounting Type:	Surface Mount
Operating Temperature:	-20°C ~ 80°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	60dB (120Hz)
Current - Quiescent (Iq):	10mA
Current - Output:	1A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	12V
Voltage - Input (Max):	24V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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Introduction

PQ12DZ11J00H voltage regulators, or linear voltage regulators, are devices designated for use in situations where precise control of electrical power is desired. These regulators are used to provide a precise voltage level to a device or system, even when the operating voltage of the device is subject to variations in power load or environmental conditions.

Application Field

PQ12DZ11J00H regulators are commonly used in areas like automotive electronics, industrial equipment, home appliances, communication and computing systems. They are often used in circuits that require continuous voltage control to protect sensitive equipment from external influences such as power surges and spikes. They can also be used to convert a higher voltage such as an automobile alternator voltage and provide a constant output for the charging of a battery. These regulators can also be used to provide a constant voltage output from a variable input such as a battery that is changing in voltage due to its discharge rate or state of charge.

Working Principle

The operation of linear regulators like the PQ12DZ11J00H is based on the principle of a voltage divider. The voltage divider consists of two resistors, one of which is a variable or adjustable resistor, which is combined with a series pass transistor. The transistor is used in the voltage regulating function and forms a closed loop control system. The output of the device is determined by the amount of current drawn by the load, the setting of the adjustable resistor, and the characteristics of the series pass transistor.A voltage regulator sets the output voltage in response to the input voltage. The input voltage is compared against an internally set reference voltage, then the current is drawn by the transistor which drives the output voltage. When the input voltage is low, current is drawn from the transistor and the output voltage is raised, and vice versa when the input voltage rises. This process is continuously repeated in order to maintain the output voltage at the desired setting.

Conclusion

PQ12DZ11J00H linear voltage regulators are designed for applications where precise voltage control is desired. They are commonly used in automotive electronics, industrial equipment, home appliances, communications, and computing systems. They can also be used to convert a higher voltage to a regulated lower voltage, or to provide a regulated voltage output from a variable input such as a battery. The operation of the device is based on a voltage divider circuit with a series pass transistor to adjust the output voltage in response to the input voltage.

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