LT1121IS8#TRPBF

Product Overview

Category

The LT1121IS8#TRPBF belongs to the category of voltage regulators.

Use

It is used to regulate voltage in electronic circuits, ensuring a stable and constant output voltage regardless of input variations.

Characteristics

• Low dropout voltage
• Low quiescent current
• Wide input voltage range
• Thermal shutdown protection

Package

The LT1121IS8#TRPBF comes in an 8-lead SOIC package.

Essence

This voltage regulator is essential for maintaining consistent power supply in various electronic devices and systems.

Packaging/Quantity

The LT1121IS8#TRPBF is typically packaged in reels with a specific quantity per reel, as specified by the manufacturer.

Specifications

• Input Voltage Range: 2.5V to 20V
• Output Voltage Range: 1.22V to 18V
• Dropout Voltage: 0.4V at 150mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT1121IS8#TRPBF has the following pin configuration: 1. VIN (Input Voltage) 2. GND (Ground) 3. ADJ (Adjust) 4. VOUT (Output Voltage)

Functional Features

• Low dropout voltage allows for regulation even when the input voltage is only slightly higher than the output voltage.
• Low quiescent current minimizes power consumption, making it suitable for battery-powered applications.
• Thermal shutdown protection prevents the device from overheating under excessive operating conditions.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables versatile application in various electronic systems.
• Low dropout voltage ensures efficient regulation even with small voltage differentials.
• Low quiescent current enhances energy efficiency, particularly in battery-operated devices.

Disadvantages

• Limited maximum output current compared to some other voltage regulators.
• The thermal shutdown feature may lead to temporary disruption in operation under extreme temperature conditions.

Working Principles

The LT1121IS8#TRPBF operates by comparing the output voltage to a reference voltage and adjusting the pass transistor to maintain a constant output voltage, compensating for changes in the input voltage.

Detailed Application Field Plans

The LT1121IS8#TRPBF is well-suited for use in portable electronic devices, battery-powered systems, sensor modules, and other applications requiring stable and efficient voltage regulation.

Detailed and Complete Alternative Models

Some alternative models to the LT1121IS8#TRPBF include the LM317, LM7805, and LM1117, each offering similar voltage regulation capabilities with varying specifications and package options.

In conclusion, the LT1121IS8#TRPBF is a versatile voltage regulator with low dropout voltage, low quiescent current, and thermal shutdown protection, making it suitable for a wide range of electronic applications, especially those requiring efficient power management in challenging environments.

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