LT1121IZ-3.3#PBF

Product Overview

The LT1121IZ-3.3#PBF belongs to the category of voltage regulators and is commonly used in electronic devices to provide a stable output voltage. This integrated circuit is known for its high precision, low dropout voltage, and low quiescent current, making it suitable for various applications in the electronics industry. The LT1121IZ-3.3#PBF comes in a compact package and is designed to deliver consistent performance in diverse operating conditions.

Basic Information

• Category: Voltage Regulator
• Use: Provides stable output voltage in electronic devices
• Characteristics: High precision, low dropout voltage, low quiescent current
• Package: TO-220
• Essence: Ensures reliable and stable voltage supply
• Packaging/Quantity: Available in tape and reel packaging with varying quantities

Specifications

The LT1121IZ-3.3#PBF operates with an input voltage range of 4.75V to 20V and provides a fixed output voltage of 3.3V. It can deliver a maximum output current of 150mA and features low dropout voltage, typically 300mV at full load.

Detailed Pin Configuration

The LT1121IZ-3.3#PBF has a standard three-pin configuration: 1. Input (VIN): Accepts the input voltage from the power source. 2. Ground (GND): Serves as the reference ground for the regulator. 3. Output (VOUT): Provides the regulated output voltage.

Functional Features

• High Precision: Ensures accurate and stable output voltage.
• Low Dropout Voltage: Enables efficient operation even with small voltage differentials.
• Low Quiescent Current: Minimizes power consumption during standby mode.

Advantages and Disadvantages

Advantages

• Reliable and stable voltage regulation
• Compact form factor
• Low dropout voltage enhances efficiency

Disadvantages

• Limited maximum output current
• Not suitable for high-power applications

Working Principles

The LT1121IZ-3.3#PBF utilizes a feedback control mechanism to maintain the output voltage at a constant level. It compares the actual output voltage with a reference voltage and adjusts the internal circuitry to ensure precise regulation.

Detailed Application Field Plans

The LT1121IZ-3.3#PBF finds extensive use in portable electronic devices, battery-powered systems, and low-power applications where maintaining a stable voltage supply is critical. It is commonly employed in handheld consumer electronics, sensor modules, and IoT devices.

Detailed and Complete Alternative Models

• LM1117: Offers similar voltage regulation capabilities with higher output current capacity.
• MCP1700: Provides low dropout voltage and low quiescent current for energy-efficient designs.

In conclusion, the LT1121IZ-3.3#PBF is a reliable voltage regulator that caters to the demand for stable and efficient power management in modern electronic devices. Its compact design and precision make it a preferred choice for various low-power applications.

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