SPX3819S-L-1-5

Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - Low quiescent current - High output accuracy - Thermal shutdown protection - Short circuit current limit

Package: SOT-23-5

Essence: The SPX3819S-L-1-5 is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate and maintain a constant voltage level.

Packaging/Quantity: The SPX3819S-L-1-5 is available in a SOT-23-5 package, which consists of a small plastic body with five leads. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 1.5V
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 120µA
• Output Current: Up to 500mA
• Line Regulation: 0.05%/V
• Load Regulation: 0.1%/mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SPX3819S-L-1-5 has the following pin configuration:

1. GND (Ground)
2. VIN (Input Voltage)
3. VOUT (Output Voltage)
4. BYP (Bypass Capacitor)
5. EN (Enable)

Functional Features

• Low Dropout Voltage: The SPX3819S-L-1-5 has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The IC has a low quiescent current, minimizing power consumption when the load is light or idle.
• High Output Accuracy: It provides high output voltage accuracy, ensuring stable and precise voltage regulation.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection to prevent damage due to excessive temperature.
• Short Circuit Current Limit: It has a built-in short circuit current limit to protect the IC and connected components from excessive current.

Advantages and Disadvantages

Advantages: - Low dropout voltage allows for efficient voltage regulation. - Low quiescent current minimizes power consumption. - High output accuracy ensures stable voltage regulation. - Thermal shutdown protection prevents damage from overheating. - Short circuit current limit protects the IC and connected components.

Disadvantages: - Limited output current capacity (up to 500mA). - Restricted input voltage range (2.5V to 6.0V).

Working Principles

The SPX3819S-L-1-5 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 compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a constant output voltage.

Detailed Application Field Plans

The SPX3819S-L-1-5 finds applications in various electronic devices that require stable voltage regulation. Some common application fields include:

1. Mobile Devices: Used to regulate voltage for battery-powered smartphones, tablets, and portable media players.
2. IoT Devices: Provides voltage stability for Internet of Things (IoT) devices such as sensors, smart home devices, and wearable technology.
3. Automotive Electronics: Used in automotive systems to regulate voltage for infotainment systems, lighting controls, and other electronic components.
4. Industrial Equipment: Provides voltage regulation for industrial control systems, motor drives, and power supplies.
5. Consumer Electronics: Used in audio/video equipment, gaming consoles, and other consumer electronic devices.

Detailed and Complete Alternative Models

1. SPX3819S-L-1-8: Similar to SPX3819S-L-1-5 but with an output voltage of 1.8V.
2. SPX3819S-L-2-5: Similar to SPX3819S-L-1-5 but with an output voltage of 2.5V.
3. SPX3819S-L-3-3: Similar to SPX3819S-L-1-5 but with an output voltage of 3.3V.
4. SPX3819S-L-ADJ: Adjustable output voltage version, allowing for a wide range of output voltage settings.

These alternative models provide similar functionality and characteristics but with different output voltage options to suit specific application requirements.

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