IRU1117-33CDTR

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: DFN-8 (Dual Flat No-Lead)

Essence: The IRU1117-33CDTR is a low dropout voltage regulator designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The IRU1117-33CDTR is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V - 6.5V
• Output Voltage: 3.3V
• Dropout Voltage: 0.4V @ 800mA
• Output Current: 800mA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU1117-33CDTR has a total of 8 pins, which are labeled as follows:

1. VIN: Input Voltage
2. GND: Ground
3. EN: Enable Pin
4. BYP: Bypass Capacitor Pin
5. VOUT: Output Voltage
6. NC: No Connection
7. NC: No Connection
8. NC: No Connection

Functional Features

• Low dropout voltage ensures efficient power conversion.
• High output current capability allows for powering a wide range of devices.
• Thermal shutdown protection prevents the IC from overheating.
• Short circuit current limit protects the IC and connected devices from excessive current.
• Fast transient response enables quick and stable voltage regulation.

Advantages and Disadvantages

Advantages: - Low dropout voltage results in higher efficiency. - High output current capability allows for versatile applications. - Thermal shutdown protection ensures safe operation. - Fast transient response provides stable voltage regulation.

Disadvantages: - Limited input voltage range (2.5V - 6.5V). - Output voltage fixed at 3.3V, not adjustable.

Working Principles

The IRU1117-33CDTR operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop between the input and output terminals. The internal circuitry adjusts the resistance to ensure a stable output voltage even when the input voltage fluctuates.

Detailed Application Field Plans

The IRU1117-33CDTR is commonly used in various electronic devices that require a stable and regulated power supply. Some typical application fields include:

1. Mobile Devices: Smartphones, tablets, portable media players.
2. Computer Peripherals: USB hubs, external hard drives, printers.
3. Consumer Electronics: Set-top boxes, gaming consoles, digital cameras.
4. Industrial Equipment: Sensors, control systems, motor drivers.
5. Automotive Electronics: Infotainment systems, navigation devices, lighting controls.

Detailed and Complete Alternative Models

1. LM1117-3.3: Similar low dropout voltage regulator with adjustable output voltage.
2. LT1763-3.3: Low noise, high PSRR voltage regulator with fixed 3.3V output.
3. TPS7A3301: Ultra-low dropout voltage regulator with adjustable output voltage and high output current capability.

These alternative models offer similar functionality and can be considered as substitutes for the IRU1117-33CDTR in specific applications.

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