LT1121IZ-3.3#TRPBF

Product Overview

Category

The LT1121IZ-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 LT1121IZ-3.3#TRPBF provides a regulated output voltage of 3.3V.
• Low dropout: It has a low dropout voltage, allowing it to operate with small input-output differentials.
• High accuracy: This voltage regulator offers high precision and accuracy in maintaining the desired output voltage.
• Low quiescent current: The LT1121IZ-3.3#TRPBF consumes minimal current when in standby mode, conserving power.
• Thermal shutdown: It includes a thermal shutdown feature that protects the device from overheating.

Package

The LT1121IZ-3.3#TRPBF comes in a compact TO-92 package, which is widely used for through-hole mounting on PCBs.

Essence

The essence of the LT1121IZ-3.3#TRPBF is its ability to provide a stable and regulated output voltage, ensuring reliable operation of electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specific quantity of units per package. Please refer to the manufacturer's specifications for detailed packaging information.

Specifications

• Output voltage: 3.3V
• Input voltage range: 4.5V to 20V
• Dropout voltage: 300mV at 100mA load
• Quiescent current: 75µA
• Line regulation: ±0.02%
• Load regulation: ±0.04%
• Operating temperature range: -40°C to 125°C

Detailed Pin Configuration

The LT1121IZ-3.3#TRPBF has three pins:

1. Vin (Pin 1): Input voltage pin.
2. Vout (Pin 2): Output voltage pin.
3. GND (Pin 3): Ground pin.

Functional Features

• Voltage regulation: The LT1121IZ-3.3#TRPBF maintains a constant output voltage of 3.3V, regardless of input voltage fluctuations.
• Low dropout: It can operate with a small voltage difference between the input and output, minimizing power dissipation.
• Thermal shutdown: The device shuts down if the temperature exceeds a safe threshold, protecting it from damage.
• Short-circuit protection: The LT1121IZ-3.3#TRPBF is designed to withstand short-circuits without causing damage.

Advantages and Disadvantages

Advantages

• High accuracy and precision in voltage regulation.
• Low quiescent current consumption.
• Compact package size for easy integration into electronic circuits.
• Thermal shutdown feature protects against overheating.
• Suitable for a wide range of applications.

Disadvantages

• Limited output voltage options (fixed at 3.3V).
• May require additional components for specific applications.

Working Principles

The LT1121IZ-3.3#TRPBF operates based on the principle of a linear voltage regulator. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage of 3.3V. The device regulates the voltage by dissipating excess energy as heat when the input voltage exceeds the desired output voltage.

Detailed Application Field Plans

The LT1121IZ-3.3#TRPBF finds applications in various fields, including but not limited to: - Battery-powered devices: It can be used to regulate voltage in portable electronics such as smartphones, tablets, and portable audio players. - Automotive electronics: The voltage regulator ensures stable power supply to various components in vehicles, including infotainment systems, sensors, and control modules. - Industrial automation: It is suitable for powering microcontrollers, sensors, and other electronic components in industrial automation systems. - IoT devices: The LT1121IZ-3.3#TRPBF can be utilized in Internet of Things (IoT) devices that require a stable power source.

Detailed and Complete Alternative Models

Some alternative models to the LT1121IZ-3.3#TRPBF include: - LM1117-3.3: A popular 3.3V voltage regulator with similar characteristics and package options. - MCP1702-3302E: Another 3.3V voltage regulator known for its low quiescent current and compact SOT-23 package. - AMS1117-3.3: A cost-effective option for regulating voltage at 3.3V, available in various package types.

These alternative models offer similar functionality and can be considered based on specific requirements and availability.

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