LD29080PT33R

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, 3.3V Output, High Current Capability
• Package: TO-220
• Essence: LD29080PT33R is a voltage regulator IC designed to provide a stable output voltage of 3.3V with low dropout voltage. It is capable of handling high currents and is commonly used in various electronic devices.
• Packaging/Quantity: The LD29080PT33R is available in a TO-220 package and is typically sold in reels or tubes.

Specifications

• Input Voltage Range: 4.5V - 26V
• Output Voltage: 3.3V ±2%
• Dropout Voltage: 0.6V @ 1A
• Maximum Output Current: 1.5A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD29080PT33R has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground reference pin.
3. VOUT (Pin 3): Output voltage pin.

Functional Features

• Low Dropout Voltage: The LD29080PT33R exhibits a low dropout voltage of only 0.6V at 1A load, ensuring efficient power conversion.
• High Current Capability: With a maximum output current of 1.5A, this voltage regulator can handle demanding applications that require higher current levels.
• Stable Output Voltage: The IC provides a stable output voltage of 3.3V with a tight tolerance of ±2%.
• Low Quiescent Current: The LD29080PT33R has a low quiescent current of 75µA, minimizing power consumption when the load is light.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - High current capability allows for use in demanding applications. - Stable output voltage with tight tolerance. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited to a fixed output voltage of 3.3V. - Requires external components for proper operation (input/output capacitors, etc.).

Working Principles

The LD29080PT33R operates as a linear voltage regulator. It regulates the input voltage to a stable 3.3V output by using a pass transistor that adjusts its resistance based on the difference between the input and desired output voltage. This feedback mechanism ensures a constant output voltage regardless of variations in the input voltage or load conditions.

Detailed Application Field Plans

The LD29080PT33R finds applications in various electronic devices where a stable 3.3V power supply is required. Some common application fields include:

1. Embedded Systems: Used to power microcontrollers, sensors, and other components in embedded systems.
2. Consumer Electronics: Provides regulated power for portable devices, such as smartphones, tablets, and digital cameras.
3. Industrial Equipment: Suitable for powering control circuits, motor drivers, and other industrial electronics.
4. Automotive Electronics: Used in automotive applications, such as infotainment systems, navigation units, and lighting controls.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and package type.
2. AMS1117-3.3: Another alternative offering comparable performance and compatibility.
3. LP2985-3.3: A low dropout voltage regulator with a 3.3V output and small package size.

These alternative models provide similar functionality and can be considered as substitutes for the LD29080PT33R in various applications.

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