LT1764AEFE-3.3#PBF

Current - Output:	3A
Base Part Number:	LT1764
Supplier Device Package:	16-TSSOP-EP
Package / Case:	16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	63dB (120Hz)
Current - Supply (Max):	200mA
Current - Quiescent (Iq):	1.5mA
Series:	--
Voltage Dropout (Max):	0.66V @ 3A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	20V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

The LT1764AEFE-3.3#PBF is a high performance low dropout linear voltage regulator from Linear Technology’s family of low-voltage regulators. This regulation device offers ultra-low dropout voltage, extremely low quiescent current, and high power-supply rejection ratio. It is designed to provide stable output voltages and power to a variety of low-power systems.

Application Fields

The LT1764AEFE is a highly versatile and extremely efficient voltage regulator for many continuous voltage applications, such as providing the regulated DC voltage for sensors, components, and PCBs. The LT1764AEFE-3.3#PBF works very well for powering low-voltage systems and is especially useful for powering small portable battery-operated devices, helping to extend the device’s battery life.The LT1764AEFE also offers a fast transient response to quickly adapt to load transients, making it ideal for use in automotive, industrial, and medical applications.

Features

The LT1764AEFE-3.3#PBF offers a number of features to ensure its performance and reliability. These include an ultra-low dropout voltage so the regulator regulates efficiently even when the input voltage is close to the output voltage, low quiescent current of only 2μA, and a high power-supply rejection ratio of 75dB. In addition, the device offers a fast transient response, allowing it to quickly and accurately regulate the output voltage even when input voltage and load transients are present. The device also features an adjustable soft-start function to helps protect against inrush currents, as well as an undervoltage lockout (UVLO) to protect the device from low-input voltage conditions.

Working Principle

The LT1764AEFE-3.3#PBF is a low-dropout linear voltage regulator that works by lowering the output voltage of the power supply within its specified range. The device uses a voltage feedback network to control the output voltage within the specified range. A reference voltage is cascaded with an external resistor divider and is fed back to the error amplifier. The error amplifier then drives the base of the pass transistor to drive the output voltage.

Conclusion

The LT1764AEFE-3.3#PBF is a dependable and efficient low-dropout linear voltage regulator with a variety of features to ensure performance and reliability. It can be used in a wide range of applications where providing a reliable and stable regulated DC voltage is needed. Its low quiescent current, fast transient response, and high power-supply rejection ratio make it well-suited for low-power portable consumer electronics, as well as automotive, industrial, and medical applications.

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