IRU1050-33CDTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Thermal shutdown protection - Overcurrent protection - Short-circuit protection

Package: DFN-8 (Dual Flat No-Lead)

Essence: The IRU1050-33CDTR is a voltage regulator IC designed to provide a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate and stabilize the voltage supply.

Packaging/Quantity: The IRU1050-33CDTR is typically packaged in reels containing 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V - 6.5V
• Output Voltage: 3.3V
• Dropout Voltage: 200mV at 1A
• Output Current: Up to 1A
• Quiescent Current: 120μA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The IRU1050-33CDTR has a total of 8 pins arranged as follows:

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| | --| Vout Vin|-- --| GND EN |-- --| FB NC |-- |___________| ```

Pin Description: - Vout: Output Voltage - Vin: Input Voltage - GND: Ground - EN: Enable Pin - FB: Feedback Pin - NC: No Connection

Functional Features

1. Low Dropout Voltage: The IRU1050-33CDTR exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.

2. High Output Current Capability: With a maximum output current of 1A, this voltage regulator can handle a wide range of applications that require high current output.

3. Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature by shutting down the device when it reaches a critical temperature threshold.

4. Overcurrent Protection: The IRU1050-33CDTR is equipped with overcurrent protection, safeguarding the circuit from excessive current flow and potential damage.

5. Short-Circuit Protection: In the event of a short circuit, the IC automatically shuts down to protect itself and the connected components from damage.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for various applications - Thermal shutdown protection prevents overheating - Overcurrent and short-circuit protection enhance reliability

Disadvantages: - Limited input voltage range (2.5V - 6.5V) - Quiescent current of 120μA may affect power efficiency in low-power applications

Working Principles

The IRU1050-33CDTR operates based on the principle of a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB) with a reference voltage. When the output voltage deviates from the desired value, the control circuit adjusts the pass transistor to maintain a stable output voltage.

Detailed Application Field Plans

The IRU1050-33CDTR finds applications in various electronic devices where a stable and regulated voltage supply is required. Some common application fields include:

1. Consumer Electronics: Used in portable devices such as smartphones, tablets, and digital cameras to regulate the voltage supplied to different components.

2. Automotive Electronics: Employed in automotive systems to provide stable voltage to sensors, actuators, and other electronic components.

3. Industrial Control Systems: Integrated into industrial control systems to regulate voltage for motor drives, sensors, and other control circuitry.

4. Power Management: Utilized in power management circuits to ensure a stable voltage supply for microcontrollers, memory modules, and other sensitive components.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and features.
2. LT1763-3.3: Another alternative offering low dropout voltage and high output current capability.
3. TPS79633: An alternative model known for its low noise and high PSRR (Power Supply Rejection Ratio).

These alternative models can be considered based on specific requirements and availability.

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