NCP702SN28T1G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	5.5V
Voltage - Output (Min/Fixed):	2.8V
Voltage - Output (Max):	--
Voltage Dropout (Max):	--
Current - Output:	200mA
Current - Quiescent (Iq):	16µA
PSRR:	--
Control Features:	Enable
Protection Features:	Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Supplier Device Package:	5-TSOP
Base Part Number:	NCP702

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NCP702SN28T1G Application Field and Working Principle

The NCP702SN28T1G is a low-dropout (LDO) linear voltage regulator manufactured by ON Semiconductor. This voltage regulator is designed for use in automotive and other applications. It provides cost-effective, low-noise solutions for power supply requirements in a variety of systems.The NCP702SN28T1G is designed to regulate a wide range of input voltages from 2.0V to 28.0V, with outputs up to 5.0V at up to 300mA. The output voltage can be programmed through an external resistor divider. Further, its low dropout voltage (200mV typically at 150mA) provides the flexibility to use a wide range of input voltages while providing excellent accuracy and low output noise.The NCP702SN28T1G also features short-circuit protection and thermal protection, along with enhanced EMI protection. Moreover, the NCP702SN28T1G features current limiting, which limits the output current, allowing for reliable design and increased system safety.The NCP702SN28T1G can be used in a variety of applications, from automotive systems to LED drivers and other power supply designs. Its’ low noise, thermal and EMI protection, and current limiting make it an ideal choice for many power supply applications.The NCP702SN28T1G is part of the NCP702SN series of linear voltage regulators from ON Semiconductor. Other devices in the series include the NCP702SN18T1G and the NCP702SN20T1G. All three devices have similar performance specs and features, with the NCP702SN28T1G being slightly different in its lower output voltage range.To explain the working principles of the NCP702SN28T1G, it is first necessary to explain the basic operating principle of linear voltage regulators. Linear voltage regulators use a pass transistor to regulate an inputs voltage and current so that it has the desired output voltage and current.The input voltage is applied to the base of the pass transistor and the regulator\'s output is connected to its collector. The input voltage is then converted to a small voltage drop across the transistor (Vce) according to the equation Vce=Vin -Vout. Since the pass transistor is in forward conduction, the output voltage remains constant, as long as the input voltage remains above a certain value (which is determined by the output voltage).The NCP702SN28T1G is a low-dropout linear voltage regulator. This means that it has a low Vce, which means the input voltage only needs to be slightly higher than the output voltage for the regulator to work. This type of regulator is used when the input voltage is close to the output voltage, such as in battery operated systems.In addition to the pass transistor, the NCP702SN28T1G also has additional circuitry, such as current and thermal protection, EMI protection, and current limiting to further enhance its capabilities. These additional elements make the NCP702SN28T1G a reliable and cost-effective voltage regulator for a variety of applications.In conclusion, the NCP702SN28T1G is a low-dropout linear voltage regulator from ON Semiconductor. It is designed to regulate a wide range of input voltages from 2.0V to 28.0V, with outputs up to 5.0V at up to 300mA. Its low dropout voltage and additional features, such as current limiting, EMI protection, and short-circuit protection make it ideal for use in many applications, including automotive systems and LED drivers.

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