S-1312B27-A4T1U3

Basic Information Overview

Category: Electronic Component
Use: Voltage Regulator
Characteristics: High efficiency, low dropout voltage, compact size
Package: SOT-23-5
Essence: Linear regulator with built-in overcurrent protection and thermal shutdown
Packaging/Quantity: Tape and Reel / 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV (typical) at 100mA load current
• Output Current: 150mA (maximum)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.2% (typical)
• Quiescent Current: 40µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1312B27-A4T1U3 has a total of five pins arranged as follows:

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1. VIN: Input voltage pin
2. GND: Ground pin
3. NC: No connection pin
4. VOUT: Output voltage pin
5. EN: Enable pin

Functional Features

• Built-in overcurrent protection prevents damage to the device and connected components in case of excessive current flow.
• Thermal shutdown feature protects the regulator from overheating, ensuring safe operation.
• Low dropout voltage enables efficient regulation even when the input voltage is close to the desired output voltage.
• Compact SOT-23-5 package allows for space-saving integration into various electronic devices.

Advantages and Disadvantages

Advantages: - High efficiency - Built-in overcurrent protection and thermal shutdown - Compact size

Disadvantages: - Limited output current (150mA maximum) - Narrow input voltage range (2.5V to 6.0V)

Working Principles

The S-1312B27-A4T1U3 is a linear voltage regulator that operates by maintaining a constant output voltage regardless of variations in the input voltage or load conditions. It achieves this through the use of a feedback mechanism that adjusts the internal resistance to compensate for changes in the input voltage.

When the input voltage exceeds the desired output voltage, the regulator reduces its internal resistance, allowing less voltage to pass through. Conversely, when the input voltage drops below the desired output voltage, the regulator increases its internal resistance to allow more voltage to flow.

The built-in overcurrent protection monitors the current flowing through the regulator and shuts it down if the current exceeds a certain threshold. The thermal shutdown feature activates when the temperature of the regulator reaches a critical level, preventing damage due to overheating.

Detailed Application Field Plans

The S-1312B27-A4T1U3 is commonly used in various electronic devices where a stable and regulated voltage supply is required. Some typical application fields include:

1. Portable electronic devices such as smartphones, tablets, and portable media players.
2. Battery-powered devices like digital cameras, handheld gaming consoles, and wireless headphones.
3. IoT (Internet of Things) devices, including sensors, smart home devices, and wearable technology.
4. Automotive electronics, such as infotainment systems, navigation units, and dashboard displays.
5. Industrial equipment, including control systems, measurement instruments, and power management modules.

Detailed and Complete Alternative Models

1. S-1312B25-A4T1U3: Similar to S-1312B27-A4T1U3, but with a lower dropout voltage of 150mV at 100mA load current.
2. S-1312B33-A4T1U3: Similar to S-1312B27-A4T1U3, but with a higher output current capability of 300mA.
3. S-1312B18-A4T1U3: Similar to S-1312B27-A4T1U3, but with a wider input voltage range of 1.8V to 6.0V.

These alternative models provide flexibility in choosing the most suitable voltage regulator based on specific application requirements.

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