SPX3819M5-L-2-5

Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: SOT-23-5

Essence: The SPX3819M5-L-2-5 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 SPX3819M5-L-2-5 is typically packaged in a SOT-23-5 package, which consists of a small plastic body with five leads. It is available in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 2.5V
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 120µA
• Output Current: Up to 500mA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The SPX3819M5-L-2-5 has the following pin configuration:

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| | --| V IN|-- Pin 1: Input Voltage --| GND |-- Pin 2: Ground --| V OUT|-- Pin 3: Output Voltage --| NC |-- Pin 4: No Connection --| EN |-- Pin 5: Enable (Shutdown) Control |____| ```

Functional Features

• Low dropout voltage: The SPX3819M5-L-2-5 can regulate the output voltage even when the input voltage is close to the desired output voltage, minimizing power loss.
• High output voltage accuracy: It provides a precise and stable output voltage of 2.5V, ensuring reliable performance in various applications.
• Low quiescent current: The IC consumes minimal current when in standby mode, reducing power consumption and extending battery life.
• Thermal shutdown protection: It incorporates a thermal shutdown feature that protects the IC from overheating, preventing damage to the device.
• Short circuit current limit: The SPX3819M5-L-2-5 has built-in protection against excessive current flow, safeguarding the circuitry.

Advantages and Disadvantages

Advantages: - Stable output voltage regulation - Low dropout voltage - High output voltage accuracy - Low quiescent current consumption - Thermal shutdown protection - Short circuit current limit for protection

Disadvantages: - Limited output voltage options (fixed at 2.5V) - Not suitable for high-power applications

Working Principles

The SPX3819M5-L-2-5 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 ensures a stable output voltage by adjusting the pass transistor's resistance to maintain the desired voltage level.

Detailed Application Field Plans

The SPX3819M5-L-2-5 finds applications in various electronic devices where a stable and regulated voltage supply is required. Some common application fields include:

1. Battery-powered devices: It can be used in portable electronics such as smartphones, tablets, and wearable devices to regulate the voltage supplied to different components.
2. IoT devices: The IC is suitable for low-power Internet of Things (IoT) devices that require a stable voltage source for sensors, microcontrollers, and communication modules.
3. Automotive electronics: It can be utilized in automotive applications to regulate voltage for various components, including infotainment systems, lighting, and control modules.
4. Industrial equipment: The SPX3819M5-L-2-5 is suitable for industrial automation systems, providing regulated voltage for sensors, actuators, and control circuits.

Detailed and Complete Alternative Models

1. LM1117-2.5: A popular alternative with similar specifications and pin configuration.
2. MCP1702-2502E/TO: Another voltage regulator IC offering a fixed 2.5V output voltage.
3. LP2985-2.5: Low dropout voltage regulator with a fixed 2.5V output and SOT-23-5 package.

These alternative models provide similar functionality and can be used as replacements for the SPX3819M5-L-2-5 in various applications.

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