NCP500SQL25T1

Current - Output:	150mA
Base Part Number:	NCP500
Supplier Device Package:	6-DFN (2x2.2)
Package / Case:	6-VDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	62dB (1kHz)
Current - Supply (Max):	300µA
Current - Quiescent (Iq):	1µA
Series:	--
Voltage Dropout (Max):	0.27V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The NCP500 series from ON Semiconductor is a family of low-cost, low-dropout linear voltage regulators. These regulators offer the superior performance and features of higher cost solutions, while delivering the power and cost efficiency of standard linear solutions. This series of linear regulators are designed for applications in automotive, computing, and industrial systems.

Features & Benefits

The NCP500 series of voltage regulators offer many beneficial features, such as:

• Low dropout voltage of 175mV at full load
• Input voltage range of 2.5V to 25V
• Output voltage range of 1.3V to 25V
• Output current up to 2A
• Wide thermal range of -40°C to +125°C
• Operating current rating of 2A
• Advanced low-noise design
• High output power accuracy
• Internal thermal shut down and current limit functions
• Internal control loop compensation

The NCP500 series of voltage regulators is uniquely designed to minimize ripple and noise, while maximizing power efficiency, making them ideal for powering high performance electronics. They utilize proprietary bipolar technology, a unique combination of high-energy bi-polar transistors and low loop impedance, to reduce output voltage noise and ripple.

Applications

The NCP500 series of voltage regulators are designed for a wide range of applications, including:

• Computing and server systems
• Automotive systems
• Consumer electronics and appliances
• Power supply, power filters, and voltage referees
• Mobile device charging systems
• Industrial systems

Working Principle

The NCP500 series of voltage regulators operate on the principles of linear regulation. This process involves controlling the output voltage by modulating the input voltage. The regulator applies two resistors, one internal to the chip and one external, in series to control the output voltage. The input voltage is applied to the gate of an N-channel MOSFET, which then acts as a variable resistance. The internal resistor is fixed and the external resistor is variable, thus allowing the user to adjust the voltage levels at the output.The output voltage of the regulator is compared to a reference voltage and an error amplifier is used to adjust the output voltage to maintain the required output voltage. If the output voltage rises above the desired voltage level, the error amplifier reduces the resistance of the MOSFET, which reduces the input voltage to the regulator, thus lowering the output voltage. Similarly, if the output voltage is below the desired level, the resistance of the MOSFET is increased, which increases the input voltage and brings the output voltage back up to its required level.

Conclusion

The NCP500 series of voltage regulators from ON Semiconductor offers superior performance and features at an affordable price. With its wide input and output voltage range, low dropout voltage and high power efficiency, it is ideal for applications in automotive, computing, industrial and consumer electronics. The integrated features including internal thermal shut down and current limit functions, advanced low-noise design and internal control loop compensation, provide reliable and efficient performance.

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