NCP603SN300T1G

Current - Output:	300mA
Base Part Number:	NCP603
Supplier Device Package:	5-TSOP
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Transient Voltage
Control Features:	Enable
PSRR:	62dB ~ 38dB (120Hz ~ 10kHz)
Current - Quiescent (Iq):	180µA
Series:	--
Voltage Dropout (Max):	0.23V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

NCP603SN300T1G is a linear voltage regulator from ON Semiconductor. This device is an adjustable positive voltage regulator with an output current capability of 2A and a wide input voltage range of 4.5V to 28V. It includes an error amplifier with output voltage range between 1.2V and 15V. Its internal circuitry includes thermal shutdown that stops abnormal device operation caused by excessive temperature and current limit functions to limit output current.

Application Fields

NCP603SN300T1G can be used in a variety of different applications where a reliable and efficient power supply is needed. These include low-dropout (LDO) voltage regulators, battery chargers, microcontroller (MCU) power supplies, and power supplies for Industrial, Scientific and Medical (ISM) applications. It can also be used in applications such as automotive, aviation, and military that require high power supply standards.

Working Principle

NCP603SN300T1G works with a type of power supply that is known as a linear voltage regulator. This type of voltage regulator consists of an adjustable voltage reference, an error amplifier and a pass transistor. The adjustable voltage reference is used to set the desired output voltage, while the error amplifier and the pass transistor control the amount of current passing through the device. The error amplifier compares the output voltage and the desired voltage, and adjusts the pass transistor current accordingly. The pass transistor is the transistor that is actually responsible for the regulation of the output voltage. When there is an input voltage applied to the NCP603SN300T1G, the reference voltage and error amplifier measure the input voltage and compare it to the desired voltage. If the voltage is different from the desired voltage, the error amplifier adjusts the output current of the pass transistor accordingly. The current from the pass transistor then creates a voltage drop across a resistor, resulting in a regulated output voltage.

Conclusion

NCP603SN300T1G is a linear voltage regulator from ON Semiconductor that can be used in a variety of different applications where a reliable and efficient power supply is needed. This device utilizes a type of power supply known as a linear voltage regulator, which consists of an adjustable voltage reference, an error amplifier and a pass transistor. By comparing the input and desired voltage, and adjusting the pass transistor current accordingly, NCP603SN300T1G is able to deliver a steady regulated output voltage.

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