IRU1030-33CD

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Input Voltage Range: 4.5V to 18V - Output Voltage: 3.3V - Maximum Output Current: 1A - Dropout Voltage: 300mV at 1A - Package Type: TO-252-3 (DPAK) - Essence: Low dropout linear voltage regulator

Packaging/Quantity: The IRU1030-33CD is available in a TO-252-3 package, commonly known as DPAK (Drain Package). It is sold individually or in reels of 2,500 units.

Specifications

The specifications for the IRU1030-33CD are as follows:

• Input Voltage Range: 4.5V to 18V
• Output Voltage: 3.3V ±2%
• Maximum Output Current: 1A
• Dropout Voltage: 300mV at 1A
• Line Regulation: 0.2% typical
• Load Regulation: 0.4% typical
• Quiescent Current: 10mA typical
• Operating Temperature Range: -40°C to +125°C
• Package Type: TO-252-3 (DPAK)

Detailed Pin Configuration

The IRU1030-33CD 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.
3. VOUT (Pin 3): Output voltage pin. Provides regulated 3.3V output.

Functional Features

The IRU1030-33CD offers the following functional features:

• Low dropout voltage: The regulator maintains a stable output voltage even when the input voltage is close to the desired output voltage.
• Overcurrent protection: The IC includes built-in protection against excessive current, preventing damage to the device and connected components.
• Thermal shutdown: In case of excessive temperature, the regulator shuts down to prevent overheating and potential damage.
• Short-circuit protection: The IC is designed to withstand short-circuits without causing any harm.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation even with low input voltages. - Overcurrent protection safeguards the circuit from damage due to excessive current. - Thermal shutdown prevents overheating and extends the lifespan of the device. - Short-circuit protection enhances the reliability of the regulator.

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power applications. - The TO-252-3 package may require additional heat dissipation measures in certain scenarios.

Working Principles

The IRU1030-33CD is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage to a reference voltage and adjusting the pass transistor accordingly. When the output voltage drops below the desired level, the pass transistor increases its conductivity to maintain a stable output voltage.

Detailed Application Field Plans

The IRU1030-33CD can be used in various applications, including but not limited to:

1. Battery-powered devices: Provides a stable 3.3V supply for microcontrollers, sensors, and other low-power components.
2. Automotive electronics: Suitable for powering control modules, infotainment systems, and lighting circuits.
3. Industrial equipment: Can be used in automation systems, motor control circuits, and instrumentation devices.
4. Consumer electronics: Ideal for portable devices, audio amplifiers, and small-scale power supplies.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and package type.
2. NCP1117-3.3: Offers comparable performance and is available in various package options.
3. TPS73633: Provides a low dropout voltage and comes in a small SOT-223 package.

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

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