NCP4682DSQ33T1G

Current - Output:	150mA
Base Part Number:	NCP4682
Supplier Device Package:	SC-82AB
Package / Case:	SC-82A, SOT-343
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current
Control Features:	Enable
PSRR:	30dB (1kHz)
Current - Quiescent (Iq):	1.5µA
Series:	--
Voltage Dropout (Max):	0.32V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	5.25V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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NCP4682DSQ33T1G Application Field and Working Principle

The NCP4682DSQ33T1G is a low voltage regulator from Texas Instruments, one of the world’s leading semiconductor manufacturers. This device belongs to the PMIC (Power Management Integrated Circuit) family of components and more specifically to the Linear Voltage Regulators’ category. The NCP4682DSQ33T1G is a low drop-out (LDO) regulator. It is specifically designed to power applications that require low output voltages and current levels. It has an output voltage range from 0.8V to 5.0V and can provide up to 500mA of current. It also offers excellent load and line regulation with very low quiescent current. Due to these features, the NCP4682DSQ33T1G is well suited for battery-powered systems like mobile phones, tablet PCs and smart meters.The NCP4682DSQ33T1G is designed to operate with a single-cell lithium-ion battery and provides a low voltage protection circuit. This circuit monitors the battery voltage and automatically shuts down the regulator when the battery voltage falls below a specified limit. The device also offers an external shutdown pin, which can be used to shut down the regulator under certain conditions. The NCP4682DSQ33T1G has a wide input voltage range of 1.8V to 5.5V and offers low output offset, current limit and thermal protection. It also features low output voltage and temperature coefficients and requires a minimal amount of external components. The working principle of the NCP4682DSQ33T1G is based on the well known principle of series voltage regulation (also known as a linear regulator). In this type of circuit, a reference voltage is compared to the input voltage and the difference voltage is used to control the current through a control element. This element can either be a resistive element (shunt regulator) or a transistors (series regulator). In the case of the NCP4682DSQ33T1G, it uses a series transistor (an NMOS) to adjust the output voltage. As the input voltage increases, the regulator increases the current through the NMOS transistor in order to maintain a constant output voltage. The current delivered to the load is regulated by the NMOS transistor, which acts like a variable resistor.The NCP4682DSQ33T1G also includes a special feature, which is the low drop-out (LDO) voltage regulator. This is an important feature that improves the efficiency of the regulator by reducing the amount of power dissipation, meaning the regulator will not be wasting as much power as it would with a traditional linear regulator.Overall, the NCP4682DSQ33T1G is a high performance, low drop-out linear regulator that is suitable for a variety of applications. It offers excellent load and line regulation, wide input voltage range, low output offset and current limit, and minimal external components requirement. It also has a low voltage protection circuit and offers excellent efficiency with a low drop-out voltage.

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