Current - Output:	200mA
Base Part Number:	XC6501
Supplier Device Package:	3-USP (1.2x1.2)
Package / Case:	2-SFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Short Circuit
Control Features:	--
PSRR:	50dB (1kHz)
Current - Quiescent (Iq):	19µA
Series:	--
Voltage Dropout (Max):	0.38V @ 100mA
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:	Active
Packaging:	Tape & Reel (TR)

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XC6501P251HR-G Application Field and Working Principle

Introduction

The XC6501P251HR-G is a low dropout linear voltage regulator with input voltage range from 2.2V to 15V and output voltage up to 2.4V. It has a 1.8A maximum output current, 75mV typical dropout voltage, and high-efficiency of 1.2mΩ typical on-resistance. This device is offered in the SC-69 mini-flat package with an extremely small footprint of 2.3mm x 2.92mm. The XC6501P251HR-G is an ideal choice for an extremely wide variety of applications, including audio amplifiers, cellular phones, LCD TV displays, laptop computers, tablet PCs, printers, monitors, and more.

Application Field

The XC6501P251HR-G is designed for use in a broad range of applications, including mobile phones, tablet PCs, laptop computers, LCD TV displays, audio amplifiers, printers, monitors and many more devices. The device is especially suited for small, low-power designs, such as portable electronic devices with limited space and power-on restrictions.With a typical dropout voltage of 75mV, the XC6501P251HR-G is an excellent choice for powering sub-circuits and other delicate circuitry, as well as for providing power to high-speed microprocessors and other digital control units, as it will not cause unnecessary power loss during operation.In addition, the LC6501P251HR-G can be used as an active power factor correction (PFC) pre-regulator to improve the power factor of high power AC/DC converters in industrial and consumer applications. This reduces the total harmonic distortion (THD) of the power supply and helps meet global efficiency standards.

Working Principle

The XC6501P251HR-G is an LM117/LM317 type series regulator designed to output a precise, accurate voltage. It takes an input voltage between 2.2V and 15V and provides an adjustable output voltage up to 2.4V. The output can be precisely adjusted by connecting a resistor between the ADJ and GND pins.The XC6501P251HR-G incorporates a precision reference, pass transistor, and error amplifier circuit, as well as on-chip thermal limiting functionality. The pass transistor, or series element, is the main element in the voltage regulation. It is made of either a bipolar or field-effect transistor (FET). The series element is connected in series with the input line and limits the amount of current that can flow from the input line to the output line.The error amplifier compares the output voltage to the voltage reference and adjusts the reference voltage as necessary until it is equal to the output voltage. This feedback loop allows the output voltage to remain stable over time and load changes.The XC6501P251HR-G also has on-chip thermal limiting, which is designed to limit the output current when the junction temperature of the pass element exceeds a predetermined value. This helps prevent overloading and potential device failure.

Conclusion

The XC6501P251HR-G from XCELPower is a high-performance, low-dropout linear voltage regulator for a wide range of applications. It has inputs from 2.2V to 15V, offers a 1.8A maximum output current, and has a typical dropout voltage of 75mV. This makes it ideal for powering small devices such as mobile phones, tablets, and audio amplifiers. It can also be used as a PFC pre-regulator to improve the power factor of AC/DC converters, ensuring maximum efficiency and minimum EMI.

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