LT1121AIS8-3.3#TRPBF

Product Overview

Category

The LT1121AIS8-3.3#TRPBF belongs to the category of voltage regulators.

Use

This product is commonly used in electronic circuits to regulate and stabilize voltage levels.

Characteristics

• Voltage Regulation: The LT1121AIS8-3.3#TRPBF provides a regulated output voltage of 3.3V.
• Package: This product comes in an 8-pin small outline integrated circuit (SOIC) package.
• Essence: The essence of the LT1121AIS8-3.3#TRPBF is its ability to maintain a stable output voltage despite variations in input voltage or load conditions.
• Packaging/Quantity: The LT1121AIS8-3.3#TRPBF is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V to 20V
• Output Voltage: 3.3V
• Output Current: Up to 150mA
• Dropout Voltage: 300mV at 100mA
• Line Regulation: ±0.02%
• Load Regulation: ±0.04%
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT1121AIS8-3.3#TRPBF has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. NC (No Connection)
4. NC (No Connection)
5. VOUT (Output Voltage)
6. NC (No Connection)
7. NC (No Connection)
8. NC (No Connection)

Functional Features

• Low Dropout Voltage: The LT1121AIS8-3.3#TRPBF exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is only slightly higher than the desired output voltage.
• Low Quiescent Current: With a quiescent current of only 75µA, this voltage regulator minimizes power consumption and extends battery life in portable applications.
• Thermal Shutdown Protection: The LT1121AIS8-3.3#TRPBF incorporates thermal shutdown protection, which prevents the device from overheating under excessive load or high ambient temperature conditions.

Advantages and Disadvantages

Advantages

• High accuracy and stability in regulating output voltage.
• Low dropout voltage enables efficient operation even with low input voltages.
• Compact package size allows for easy integration into various electronic circuits.
• Thermal shutdown protection ensures reliable performance under challenging conditions.

Disadvantages

• Limited output current capacity (up to 150mA), which may not be sufficient for high-power applications.
• Higher cost compared to some other voltage regulators available in the market.

Working Principles

The LT1121AIS8-3.3#TRPBF operates based on the principle of feedback control. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage of 3.3V. This feedback loop continuously monitors and adjusts the voltage to compensate for any changes in input voltage or load conditions.

Detailed Application Field Plans

The LT1121AIS8-3.3#TRPBF finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Industrial control systems - Automotive electronics - Medical equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LT1121AIS8-3.3#TRPBF include: - LM1117-3.3: A popular 3.3V voltage regulator with similar specifications and package options. - LT1763-3.3: Another high-performance 3.3V voltage regulator with lower dropout voltage and higher output current capability.

These alternative models offer similar functionality and can be used as drop-in replacements for the LT1121AIS8-3.3#TRPBF in many applications.

In conclusion, the LT1121AIS8-3.3#TRPBF is a voltage regulator that provides stable and regulated output voltage of 3.3V. It offers low dropout voltage, low quiescent current, and thermal shutdown protection. This product finds applications in various electronic devices and systems. Alternative models such as LM1117-3.3 and LT1763-3.3 can be considered as alternatives to the LT1121AIS8-3.3#TRPBF.