LP3871ES-3.3/NOPB

Current - Output:	800mA
Base Part Number:	LP3871
Supplier Device Package:	DDPAK/TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	73dB ~ 57dB (120Hz)
Current - Supply (Max):	15mA
Current - Quiescent (Iq):	5mA
Series:	--
Voltage Dropout (Max):	0.35V @ 800mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	7V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

LP3871ES-3.3/NOPB is an adjustable, low-dropout, linear voltage regulator designed for portable electronic applications. The device is easy to use, providing a wide input and output voltage range, low output noise, low quiescent current, overtemperature protection and a thermal shutdown feature. Commonly used in portable applications such as cellular phones, PDAs and handheld PC, LP3871ES-3.3/NOPB can help to provide a stable, low output voltage and reduce stress on batteries. It also offers a wide input voltage range, low output noise, and low quiescent current – making it a great choice for devices that require a reliable power source.

Application Fields

LP3871ES-3.3/NOPB voltage regulator is suitable for any system that requires an adjustable, low-dropout, linear voltage regulator. It is ideal for applications such as cellular phones, PDAs and handheld PCs, handheld gaming devices, digital cameras, and other portable consumer electronics. LP3871ES-3.3/NOPB can also be used in automotive systems where a low-dropout voltage regulator is required.

Working Principle

LP3871ES-3.3/NOPB works by controlling the amount of current drawn from the input supply. The current is then regulated to a specific voltage level by the voltage feedback via an external feedback resistor. The output voltage level is set by an external resistor between the adjustments pins and output pins. The output voltage is regulated by comparing the output voltage with an internal reference voltage.The regulator uses an internal P-Channel MOSFET to pass the input voltage to the output only when the input voltage is higher than the output voltage by a certain amount, known as the dropout voltage. As the input voltage drops, the pass MOSFET closes and the output voltage follows the input voltage until it falls below the dropout voltage. At this point, the output voltage is held constant at the preset level.

Uses

LP3871ES-3.3/NOPB offers a wide input voltage regulation range of 2.9 V to 6.25 V and an adjustable output range of 1.275 V to 5.0 V. The device also offers low quiescent current of 18 µA, and an output current of up to 300 mA.The device’s low-dropout, low-noise operation ensures reliable power source for portable and automotive applications. The device also features thermal and over-temperature protection features to ensure safe operation. In addition, the device is available in standard, SOT-223 and SO-8 packages for a variety of applications.

Conclusion

LP3871ES-3.3/NOPB is a highly reliable, adjustable, low-dropout, linear voltage regulator designed for portable electronic applications. It offers a wide input voltage regulation range, low output noise and low quiescent current, and features thermal and over-temperature protection features. It is easy to use, providing a steady and reliable power source in automotive, portable and other applications.

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