LT1084IT#PBF

Voltage Dropout (Max):	1.5V @ 5A
Base Part Number:	LT1084
Supplier Device Package:	TO-220-3
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature
Control Features:	--
PSRR:	75dB (120Hz)
Current - Output:	5A
Series:	--
Voltage - Output (Max):	28.5V
Voltage - Output (Min/Fixed):	1.25V
Voltage - Input (Max):	30V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

The LT1084IT#PBF is a low dropout, negative voltage regulator that performs voltage regulation and is specifically designed to minimize power consumption and stress on the output voltage. It is capable of operating up to a +32 Volt input and is suitable for a variety of applications in power supply systems. The LT1084IT#PBF is available in 3 pin and 4 pin packages, providing a variety of regulator configurations and power management capabilities.

Application Field

The application field of the LT1084IT#PBF is quite broad. It can be used in a variety of power systems including automotive, industrial and consumer electronics. It is suitable for battery operated or AC to DC power supplies, solar power supplies, SMPS systems, high voltage power supplies and 12V-24V power systems. It can also be used in precision circuits, medical and audio systems, motor control, robotics and in-vehicle communication systems.

Working Principle

The LT1084IT#PBF is designed to regulate the output voltage of an AC or DC power supply. It uses a proprietary voltage regulator design that combines low dropout voltage, low quiescent current, and wide input voltage range. The device works by comparing the output voltage of the power supply with an internal reference voltage. If the output voltage is greater than the reference voltage, the LT1084IT#PBF will switch off the output, hence reducing the voltage. If the output voltage is lower than the reference voltage, the LT1084IT#PBF will switch on the output and increase the output voltage to the required level. The device also includes a ‘power good’ and ‘power bad’ indicator outputs for monitoring the output and indicating if the power supply is working properly.

Features and Benefits

The LT1084IT#PBF features an ultra-low dropout voltage, with dropout voltage of 0.15V to 0.3V typical. This low voltage provides better power efficiency and improved system performance. The device also has wide input voltage range of +12V to +32V, making it suitable for a variety of power applications. The LT1084IT#PBF also has a very low quiescent current of 3.2 mA typical, reducing power consumption and heat-generation in the power management system. The ‘power good’ and ‘power bad’ signal outputs of the device help to monitor the supply voltage and indicate if the power supply is operating within its pre-defined limits. The LT1084IT#PBF provides several benefits to users. The device is easily configurable, with options for 3 pin and 4 pin packages and various regulator configurations. It offers improved power efficiency and better regulation of output voltage. The device also provides better power reliability, since it is designed to work with wide input voltage ranges and provides protection against short circuit and overload conditions.

Conclusion

The LT1084IT#PBF is a feature-rich and versatile low dropout, negative voltage regulator. It is suitable for a wide range of applications, and offers improved power efficiency, better regulation of output voltage and better reliability. Its low dropout voltage and low quiescent current also provide reduced power consumption and improved system performance.

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