LP38853T-ADJ/NOPB

Current - Output:	3A
Base Part Number:	LP38853
Supplier Device Package:	TO-220-7
Package / Case:	TO-220-7 (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
Control Features:	Enable, Soft Start
PSRR:	80dB ~ 70dB (120Hz ~ 1kHz)
Current - Supply (Max):	9mA
Current - Quiescent (Iq):	300µA
Series:	--
Voltage Dropout (Max):	0.45V @ 3A
Voltage - Output (Max):	1.8V
Voltage - Output (Min/Fixed):	0.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

The LP38853T-ADJ/NOPB is a three-channel, low-dropout linear voltage regulator designed to conserve power by supplying a low voltage output with a low quiescent current. The regulator efficiently regulates three separate outputs from a single input supply with a minimum dropout of 500mV and a maximum quiescent current of only 55µA. It is especially suitable for battery-powered and portable electronic devices where the power conservation of the LP38853T-ADJ/NOPB makes it ideal for these applications.

Application Field

The LP38853T-ADJ/NOPB is mainly used in battery-powered or space constrained portable electronic devices, such as mobile phones, digital cameras, MP3 or media players. It is also suitable for USB, printer and any other portable or battery-powered electronic applications that require a low voltage output with a low quiescent current.The LP38853T-ADJ/NOPB has a low quiescent current, up to 55µA, so it helps to reduce power dissipation and extend battery life by reducing the total power consumed. It can provide up to 3 separate outputs from a single input supply, and it provides a minimum dropout of 500mV, so it is suitable for supplying power to a variety of applications that require a high accuracy and low voltage output. The LP38853T-ADJ/NOPB is designed to provide a low voltage output with a low quiescent current and is also specially designed for automotive and industrial applications.

Working principle

The LP38853T-ADJ/NOPB is a linear regulator and its principle of operation is very simple. The regulator consists of an internal linear regulator, an adjustable current mirror and an internal input and output voltage reference.The internal linear regulator monitors the output voltage and adjusts the current mirror magnitude to maintain the desired voltage. This is achieved by comparing the output voltage to the internal voltage reference and controlling the current mirror magnitude to regulate the output voltage to the desired level.The adjustable current mirror also allows the user to adjust the output voltage of the LP38853T-ADJ/NOPB by applying a reference voltage to the REF pin and using a potentiometer to adjust the voltage level on the RNG pin.The LP38853T-ADJ/NOPB also provides output current limit and thermal shutdown protection to protect itself and the external load from excessive current and high temperatures.

Conclusion

The LP38853T-ADJ/NOPB is a low-dropout, three-channel linear voltage regulator designed to conserve power by supplying a low voltage output with a low quiescent current. It is suitable for battery-powered and space-constrained devices such as mobile phones, digital cameras, MP3 players and any other devices that require a low voltage and low quiescent current. The LP38853T-ADJ/NOPB is designed for automotive and industrial applications and provides a minimum dropout of 500mV and a maximum quiescent current of only 55µA. Its principle of operation is based on an internal linear regulator, adjustable current mirror and a reference voltage. The regulator also provides output current limit and thermal shutdown protection.

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