PQ1KA353MZPH

Voltage Dropout (Max):	0.7V @ 300mA
Supplier Device Package:	SOT-23L-6
Package / Case:	SOT-23L-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	55dB (120Hz)
Current - Quiescent (Iq):	800µA
Current - Output:	300mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.5V
Voltage - Input (Max):	15V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

PQ1KA353MZPH is a voltage regulator designed to provide a precise linear voltage output and low power dissipation. It is part of the PMIC - Voltage Regulators - Linear category that ensures a stable operating voltage to various components of the circuit. It is a crucial component of many applications, including regulated power supply, telecommunications, industrial, automotive and aerospace applications.

Application Field

The most significant application of the PQ1KA353MZPH belongs to regulated power supply. The device operates on a precise linear voltage output, which is why it\'s especially suitable for providing power for sensitive electronic components such as CPUs, FPGA, etc. It also has application in lower power dissipation compared with other voltage regulators. Industrial applications are another major field where the PQ1KA353MZPH is used. It is often employed for industrial motor drives and control circuits because of its precise linear output and low power consumption. Additionally, due to its wide input voltage range and robust construction, this voltage regulator can handle long-term voltage fluctuations, providing enhanced reliability. Telecommunication systems rely heavily on the PQ1KA353MZPH voltage regulator. Its precise linear voltage output and low power consumption make it ideal for system applications in the telecom industry. For instance, the device can be used in central offices and radio base stations, providing reliable and precise power even under extreme conditions.Additionally, the PQ1KA353MZPH voltage regulator also finds application in automotive and aerospace industries. By providing a precise linear voltage output, the device helps to reduce electrical and EMI noise, ensuring a smooth operation in these applications.

Working Principle

The modern integrated voltage regulator is usually a three-terminal device like the PQ1KA353MZPH. The input terminal is connected to a DC power source, the output terminal is connected with the load and the ground or reference terminal is generally connected to the ground. This voltage regulator provides efficient linear voltage regulation through the following process: The input voltage is first sensed by the device. This sensed input is then compared with the reference voltage, which is the voltage available at the reference terminal. If the sensed voltage is greater than the reference voltage, the voltage regulating element is enabled, and the output voltage is lowered. Conversely, if the sensed voltage is below the reference voltage, the voltage regulating element is disabled, and the output voltage is increased. The voltage regulating element of the PQ1KA353MZPH is basically a transistor that is connected in series with the load. When enabled, the transistor reduces the voltage drop across the load and increases the current flow from the source. This process acts as a feedback loop, maintaining the output voltage at a steady level by controlling the flow of current from the power supply.

Conclusion

The PQ1KA353MZPH voltage regulator is one of the most useful devices belonging to the PMIC - Voltage Regulators - Linear category. Its precision, low power consumption, wide input voltage range and robust construction are ideal characteristics for many applications, including regulated power supply, telecommunications, industrial, automotive and aerospace applications. Its working principle is simple and involves the comparison of input and reference voltages and the subsequent operation of the voltage regulating element which helps to maintain the output voltage at a steady level.

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