L78L33ABUTR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	30V
Voltage - Output (Min/Fixed):	3.3V
Voltage - Output (Max):	--
Voltage Dropout (Max):	--
Current - Output:	100mA
Current - Quiescent (Iq):	5.5mA
Current - Supply (Max):	6mA
PSRR:	49dB (120Hz)
Control Features:	--
Protection Features:	Over Current, Over Temperature, Short Circuit
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	TO-243AA
Supplier Device Package:	SOT-89-3
Base Part Number:	L78L33A

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Introduction

The L78L33ABUTR is a low-dropout, three-terminal, positive Voltage Regulator supplied in the TO-92 package, providing a constant regulated output voltage of +3.3V. It can provide a maximum output current of 0.1A, and it is a cost-efficient, low-space solution for many applications such as portable devices, embedded controllers, microcontrollers, and analog-to-digital converters. This Voltage Regulator is designed to be used in battery-powered systems, where low supply voltages are used.

Features

The L78L33ABUTR has several important features that make it an ideal choice for easy, reliable power control. Some of these features are: * Low Quiescent Current: This Voltage Regulator has a quiescent current of only 0.35mV, which makes it an excellent choice for battery-powered applications, as it can reduce battery power consumption significantly. This low quiescent current is reliable and stable, regardless of temperature and changes in load. * High Supply Voltage: This Voltage Regulator can withstand a wide range of supply voltages, from 4V to 35V. This allows it to be used in a wide range of applications, and also allows it to provide a very precise regulated output voltage. * Thermal Overload and Short-Circuit Protection: The L78L33ABUTR is designed to protect itself against short-circuits and thermal overload, which helps to ensure that the power supply is always safe and reliable.

Applications

The L78L33ABUTR is a versatile, reliable Voltage Regulator that can be used in many different applications. Some of its most common applications are:* Automotive Electronics: The L78L33ABUTR is used in a wide variety of automotive electronics, such as power supplies, automotive test measurements, and engine controllers. * Portable Devices: The L78L33ABUTR is used in a wide variety of portable devices, such as laptops, tablets, digital cameras, and mobile phones. * Embedded Controllers: This Voltage Regulator is used in a wide variety of embedded controllers, such as LED lighting systems, building automation systems, and motor control systems. * Microcontrollers: The L78L33ABUTR is used in a variety of microcontroller-based systems, such as data acquisition systems, sensor networks, and industrial control systems. * Analog-to-Digital Converters: The L78L33ABUTR is also used in many analog-to-digital converters, as it can provide a precise, regulated output voltage which is essential for many ADC applications.

Working Principle

The L78L33ABUTR is a low-dropout, three-terminal, positive Voltage Regulator with a constant regulated output voltage of +3.3V. It works by regulating the voltage at its output terminal and maintaining a variable voltage reference at its input terminal. The reference voltage is created when a current source connected to the feedback terminal creates a voltage by pulling current from the input terminal.When the output voltage of the regulator starts to drop, the current source increases the voltage at the input terminal, which in turn increases the voltage at the output terminal. When the output voltage of the regulator is too high, the current source reduces the voltage at the input terminal, which in turn reduces the voltage at the output terminal. This process of controlling voltage is known as the voltage regulation loop.

Conclusion

The L78L33ABUTR is a low-dropout, three-terminal, positive Voltage Regulator, which is designed to provide a constant regulated output voltage of +3.3V. It is a cost-efficient, low-space solution for many applications such as portable devices, embedded controllers, microcontrollers, and analog-to-digital converters, as it can provide a maximum output current of 0.1A, and can withstand a wide range of supply voltages, from 4V to 35V. This Voltage Regulator also has low quiescent current and includes thermal overload and short-circuit protection, resulting in a reliable and safe power supply. It is also easy to use and can be used in a wide range of applications, including automotive electronics, portable devices, embedded controllers, microcontrollers, and analog-to-digital converters. In addition, it works by controlling the output voltage by creating and regulating a variable voltage reference at its input terminal. All of these features make the L78L33ABUTR an ideal choice for easy, reliable power control.

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