LD39080PT33-R

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, 3.3V Output
• Package: TO-220
• Essence: LD39080PT33-R is a voltage regulator IC designed to provide a stable output voltage of 3.3V with low dropout characteristics.
• Packaging/Quantity: The LD39080PT33-R is available in a TO-220 package and is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4.5V - 26V
• Output Voltage: 3.3V ±2%
• Maximum Output Current: 1A
• Dropout Voltage: 300mV @ 1A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD39080PT33-R has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. VOUT: Output Voltage

Functional Features

• Low Dropout: The LD39080PT33-R exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Stable Output Voltage: It provides a stable output voltage of 3.3V, making it suitable for applications requiring a precise voltage reference.
• Low Quiescent Current: With a quiescent current of only 75µA, the LD39080PT33-R minimizes power consumption during standby or idle modes.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - Stable output voltage of 3.3V for precise applications. - Low quiescent current minimizes power consumption. - Overcurrent protection enhances circuit safety.

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power applications. - TO-220 package may require additional heat dissipation measures in certain scenarios.

Working Principles

The LD39080PT33-R utilizes a combination of internal circuitry, including a voltage reference, error amplifier, and pass transistor, to regulate the output voltage. It compares the feedback voltage with the reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage of 3.3V.

Detailed Application Field Plans

The LD39080PT33-R is commonly used in various electronic devices and systems that require a stable 3.3V power supply. Some typical application fields include:

1. Embedded Systems: Used as a voltage regulator in microcontroller-based embedded systems.
2. Consumer Electronics: Powering digital cameras, portable audio players, and other battery-operated devices.
3. Communications Equipment: Providing regulated voltage for routers, modems, and network switches.
4. Automotive Electronics: Used in automotive applications such as infotainment systems, dashboard displays, and lighting control modules.

Detailed and Complete Alternative Models

1. LD1117S33TR: Similar low dropout voltage regulator with a fixed 3.3V output, available in SOT-223 package.
2. LM3940IT-3.3/NOPB: Adjustable low dropout voltage regulator with a 3.3V output, available in TO-220 package.
3. XC6206P332MR: Low dropout voltage regulator with a fixed 3.3V output, available in SOT-23 package.

These alternative models offer similar functionality and can be considered as substitutes for the LD39080PT33-R in various applications.

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