IRU1117-25CSTR

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 IRU1117-25CSTR is a low dropout voltage regulator IC designed to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity: The IRU1117-25CSTR is available in a TO-263-3 package. It is typically sold in reels or tubes containing multiple units.

Specifications

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

Detailed Pin Configuration

The IRU1117-25CSTR has three pins:

1. VIN (Pin 1): Input voltage pin. Connects to the power supply.
2. GND (Pin 2): Ground pin. Connected to the common ground of the system.
3. VOUT (Pin 3): Output voltage pin. Provides the regulated output voltage.

Functional Features

• Low dropout voltage: The IRU1117-25CSTR can regulate the output voltage even when the input voltage is close to the desired output voltage, minimizing power loss.
• High output current capability: It can deliver up to 800mA of current, making it suitable for a wide range of applications.
• Thermal shutdown protection: The IC has built-in thermal protection that shuts down the regulator if the temperature exceeds a safe limit, preventing damage.
• Short circuit current limit: In case of a short circuit, the IRU1117-25CSTR limits the output current to protect itself and the connected components.
• Fast transient response: It quickly responds to changes in load conditions, maintaining a stable output voltage.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - High output current capability allows for versatile application use. - Thermal shutdown protection prevents overheating and damage. - Fast transient response ensures stability during load changes.

Disadvantages: - Limited output voltage options (fixed at 2.5V). - Relatively low quiescent current compared to some other voltage regulators.

Working Principles

The IRU1117-25CSTR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage from the output. If the output voltage drops below the desired level, the pass transistor adjusts its resistance to maintain a constant output voltage.

Detailed Application Field Plans

The IRU1117-25CSTR can be used in various electronic applications, including but not limited to: 1. Battery-powered devices 2. Portable audio players 3. Wireless communication systems 4. Microcontroller-based projects 5. Automotive electronics 6. Industrial control systems

Detailed and Complete Alternative Models

Some alternative models to the IRU1117-25CSTR include: 1. LM1117-2.5: A similar low dropout voltage regulator with a fixed output voltage of 2.5V. 2. LT1763-2.5: Another low dropout voltage regulator with a fixed output voltage of 2.5V, offering higher output current capability. 3. TPS7A25: A low dropout voltage regulator with adjustable output voltage and higher output current capability.

These alternative models provide similar functionality and can be used as substitutes depending on specific application requirements.

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