IRU1117-18CSTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Thermal shutdown protection - Short circuit current limit - Fast transient response

Package: TO-263-3 (D2PAK)

Essence: The IRU1117-18CSTR is a low dropout voltage regulator designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The IRU1117-18CSTR is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage: 1.8V
• Dropout Voltage: 0.6V at 800mA
• Output Current: Up to 800mA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU1117-18CSTR has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground reference pin.
3. VOUT (Pin 3): Regulated output voltage pin.

Functional Features

• Low Dropout Voltage: The IRU1117-18CSTR exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 800mA, this voltage regulator can power a wide range of electronic devices.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
• Short Circuit Current Limit: The IRU1117-18CSTR has a built-in short circuit current limit feature that protects the device from damage in case of a short circuit.
• Fast Transient Response: This voltage regulator provides a fast transient response, ensuring stability and accuracy in voltage regulation during sudden load changes.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient voltage regulation. - High output current capability allows for powering various electronic devices. - Thermal shutdown protection prevents overheating and damage. - Short circuit current limit protects the device from damage in case of a short circuit. - Fast transient response ensures stability during load changes.

Disadvantages: - Limited to a fixed output voltage of 1.8V. - Not suitable for applications requiring higher output voltages.

Working Principles

The IRU1117-18CSTR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly to maintain a stable output voltage. The dropout voltage is minimized by using a low resistance pass element.

Detailed Application Field Plans

The IRU1117-18CSTR is commonly used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - Industrial control systems - Automotive electronics - Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models to the IRU1117-18CSTR include: - LM1117-1.8 (Texas Instruments) - LT1117-1.8 (Linear Technology) - MCP1702-1802E/TO (Microchip Technology)

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

Word count: 383 words