IRU1050-33CD

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Thermal shutdown protection - Short circuit current limiting - Wide input voltage range

Package: CDIP (Ceramic Dual In-line Package)

Essence: The IRU1050-33CD is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The IRU1050-33CD is typically sold in reels or tubes, with a quantity of 50 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage: 3.3V
• Output Current: Up to 1A
• Dropout Voltage: 0.6V (typical)
• Quiescent Current: 10mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The IRU1050-33CD has the following pin configuration:

```

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| | --| Vout Vin|-- --| GND Vadj|-- |___________| ```

• Vout: Output Voltage
• Vin: Input Voltage
• GND: Ground
• Vadj: Adjustable Voltage (connected to external resistors for fine-tuning the output voltage)

Functional Features

• Low Dropout Voltage: The IRU1050-33CD exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 1A, this voltage regulator can power a wide range of electronic devices.
• Thermal Shutdown Protection: The IC incorporates a thermal shutdown feature that protects it from overheating, ensuring its reliability and longevity.
• Short Circuit Current Limiting: In the event of a short circuit, the IRU1050-33CD limits the output current to prevent damage to the device or connected components.
• Wide Input Voltage Range: The voltage regulator can accept input voltages ranging from 4.5V to 40V, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - Stable and regulated output voltage - High output current capability - Thermal shutdown protection - Short circuit current limiting - Wide input voltage range

Disadvantages: - Relatively high quiescent current (10mA)

Working Principles

The IRU1050-33CD operates as a linear voltage regulator. It uses a pass transistor to regulate the output voltage based on the difference between the input and desired output voltage. The internal circuitry ensures a stable output voltage by adjusting the pass transistor's resistance to compensate for changes in the input voltage and load conditions.

Detailed Application Field Plans

The IRU1050-33CD is commonly used in various electronic devices and systems, including: 1. Power supplies for microcontrollers and other digital circuits 2. Battery-powered devices requiring a stable voltage source 3. Automotive electronics, such as infotainment systems and engine control units 4. Industrial control systems and automation equipment 5. Communication devices, such as routers and modems

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and pin configuration.
2. LT1086-3.3: Offers higher output current capability and lower dropout voltage compared to the IRU1050-33CD.
3. TPS7A3301: Provides ultra-low dropout voltage and excellent line/load regulation.

These alternative models can be considered based on specific application requirements and desired performance characteristics.

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