S-1312A30-A4T2U3

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 (selectable in 0.1V steps)
• Output Current: 150mA (max.)
• Dropout Voltage: 160mV @ 100mA
• Quiescent Current: 40µA (typ.)
• Line Regulation: ±0.05% (typ.)
• Load Regulation: ±0.2% (typ.)
• Ripple Rejection Ratio: 70dB (typ.)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1312A30-A4T2U3 has a total of five pins arranged as follows:

```

---

| | --| VOUT | --| GND | --| VIN | --| CE | --| NC | |___________| ```

• VOUT: Output Voltage
• GND: Ground
• VIN: Input Voltage
• CE: Chip Enable
• NC: No Connection

Functional Features

• Built-in overcurrent protection: Safeguards the device and connected circuitry from excessive current flow.
• Thermal shutdown: Prevents the device from overheating by shutting down when the temperature exceeds a certain threshold.
• Low dropout voltage: Allows the regulator to operate efficiently even when the input voltage is close to the output voltage.
• Compact size: The SOT-23-5 package ensures a small footprint, making it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages: - High efficiency - Built-in overcurrent protection and thermal shutdown - Wide input voltage range - Low dropout voltage - Compact size

Disadvantages: - Limited output current (150mA max.) - Requires external components for stability and filtering

Working Principles

The S-1312A30-A4T2U3 is a linear voltage regulator that operates by maintaining a constant output voltage regardless of changes in the input voltage or load conditions. It achieves this through a feedback mechanism that adjusts the internal resistance to compensate for variations.

When the input voltage exceeds the desired output voltage, the regulator reduces the resistance to lower the output voltage. Conversely, if the input voltage drops below the desired output voltage, the regulator increases the resistance to raise the output voltage.

The built-in overcurrent protection monitors the output current and limits it to prevent damage to the device and connected components. The thermal shutdown feature shuts down the regulator if the temperature rises above a safe threshold, protecting it from overheating.

Detailed Application Field Plans

The S-1312A30-A4T2U3 is commonly used in various electronic devices and systems where a stable and regulated voltage supply is required. Some typical application fields include:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices benefit from the low dropout voltage and high efficiency of the S-1312A30-A4T2U3, extending battery life.

2. IoT devices: Internet of Things (IoT) devices often operate on low voltages and require efficient power management. The S-1312A30-A4T2U3's compact size and wide input voltage range make it suitable for IoT applications.

3. Industrial automation: The regulator's overcurrent protection and thermal shutdown features make it ideal for use in industrial control systems, ensuring reliable and safe operation.

4. Automotive electronics: With its ability to withstand a wide temperature range (-40°C to +85°C), the S-1312A30-A4T2U3 is well-suited for automotive applications, including infotainment systems, lighting controls, and sensors.

Detailed and Complete Alternative Models

1. S-1312B30-A4T2U3: Similar to the S-1312A30-A4T2U3, but with an extended operating temperature range of -40°C to +105°C.
2. S-1312C30-A4T2U3: Offers higher output current capability (300mA) while maintaining similar characteristics to the S-1312A30-A4T2U3.
3. S-1312D30-A4T2U3: Provides adjustable output voltage in 0.1V steps within the range of 1.2V to 5.