IRU1117CS

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: Surface Mount Device (SMD)

Essence: Linear regulator with adjustable output voltage

Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage Range: 1.25V to 16V
• Dropout Voltage: 1.3V at 800mA
• Output Current: Up to 1A
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU1117CS has a standard TO-263 package with the following pin configuration:

```

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| | | IRU | | 1117CS | |___________|

Pin 1: Vout Pin 2: GND Pin 3: Vin ```

Functional Features

• Adjustable output voltage through external resistors
• Overcurrent and thermal protection
• Low dropout voltage for efficient operation
• Fast transient response for stable output voltage

Advantages

• Wide input voltage range allows for versatile applications
• High output current capability suits various power requirements
• Thermal shutdown protection prevents damage due to overheating
• Short circuit current limit protects the device and connected components

Disadvantages

• Dropout voltage of 1.3V may limit efficiency in low voltage applications
• Quiescent current of 120µA may be relatively high for power-sensitive designs

Working Principles

The IRU1117CS is a linear voltage regulator that maintains a stable output voltage regardless of input voltage fluctuations. It achieves this by using a pass transistor to regulate the output voltage based on a reference voltage. The adjustable output voltage feature allows users to set the desired voltage level through external resistors.

Detailed Application Field Plans

The IRU1117CS is commonly used in various electronic devices and systems, including but not limited to: - Power supplies - Battery-powered devices - Automotive applications - Industrial equipment - Communication systems

Detailed and Complete Alternative Models

1. LM1117: Similar voltage regulator with fixed output voltage options.
2. LT1086: Adjustable linear regulator with higher output current capability.
3. TPS7A47: Low dropout voltage regulator with ultra-low noise performance.

These alternative models offer similar functionality and can be considered as substitutes for the IRU1117CS depending on specific application requirements.

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