S-1312B20-A4T2U3

Basic Information Overview

Category: Electronic Component
Use: Voltage Regulator
Characteristics: High Efficiency, Low Dropout, Low Quiescent Current
Package: SOT-23-5
Essence: Linear Voltage Regulator
Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.0V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Maximum Output Current: 200mA
• Dropout Voltage: 160mV (typical) at 100mA
• Quiescent Current: 30µA (typical)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.2% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1312B20-A4T2U3 voltage regulator has a total of five pins arranged as follows:

1. VIN: Input Voltage Pin
2. GND: Ground Pin
3. CE: Chip Enable Pin
4. VOUT: Output Voltage Pin
5. NC: No Connection Pin

Functional Features

• Low dropout voltage ensures efficient power conversion.
• Low quiescent current minimizes power consumption during standby mode.
• Excellent line and load regulation for stable output voltage.
• Overcurrent protection safeguards the device from excessive current flow.
• Thermal shutdown protection prevents overheating.

Advantages and Disadvantages

Advantages: - High efficiency resulting in reduced power dissipation. - Compact SOT-23-5 package for space-constrained applications. - Wide input voltage range allows flexibility in power supply selection. - Robust overcurrent and thermal protection mechanisms ensure device reliability.

Disadvantages: - Limited maximum output current of 200mA may not be suitable for high-power applications. - Dropout voltage of 160mV may affect performance in low input voltage scenarios.

Working Principles

The S-1312B20-A4T2U3 is a linear voltage regulator that regulates the output voltage based on the difference between the input and desired output voltage. It utilizes a pass transistor to control the voltage drop across it, ensuring a stable output voltage. The chip enable pin (CE) allows the device to enter a low-power standby mode when not in use, reducing quiescent current consumption.

Detailed Application Field Plans

The S-1312B20-A4T2U3 voltage regulator finds applications in various electronic devices and systems, including but not limited to:

1. Battery-powered portable devices such as smartphones, tablets, and wearable devices.
2. IoT (Internet of Things) devices requiring efficient power management.
3. Industrial automation systems where stable voltage supply is critical.
4. Automotive electronics for regulating voltage in vehicle subsystems.
5. Medical devices demanding reliable and precise voltage regulation.

Detailed and Complete Alternative Models

1. S-1312B25-A4T2U3: Similar to S-1312B20-A4T2U3, but with a higher maximum output current of 250mA.
2. S-1312B33-A4T2U3: Similar to S-1312B20-A4T2U3, but with a higher output voltage range of 1.8V to 3.3V.
3. S-1312B50-A4T2U3: Similar to S-1312B20-A4T2U3, but with a higher output voltage range of 2.5V to 5.0V.

These alternative models provide options for different output current and voltage requirements while maintaining similar characteristics and package options.

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