S-1312A18-A4T1U3

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High Accuracy, Low Quiescent Current
• Package: SOT-23-5
• Essence: Linear Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.8V
• Output Current: 100mA
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 30μA (typical)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.1% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1312A18-A4T1U3 has a total of five pins: 1. VIN: Input voltage pin 2. GND: Ground pin 3. EN: Enable pin 4. VOUT: Output voltage pin 5. NC: No connection pin

Functional Features

• Low dropout voltage ensures stable output even with low input voltage.
• High accuracy provides precise output voltage regulation.
• Low quiescent current minimizes power consumption in standby mode.
• Built-in overcurrent protection safeguards the circuit from excessive current.

Advantages

• Compact SOT-23-5 package allows for space-saving designs.
• Wide input voltage range enables versatile applications.
• Excellent line and load regulation ensure stable performance under varying conditions.
• Low dropout voltage reduces power dissipation and extends battery life.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Single fixed output voltage restricts flexibility in voltage selection.

Working Principles

The S-1312A18-A4T1U3 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage and adjusting the pass transistor accordingly. This feedback mechanism ensures a stable output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The S-1312A18-A4T1U3 is commonly used in various battery-powered devices, such as portable electronics, IoT devices, and wireless sensors. Its low dropout voltage and low quiescent current make it suitable for applications where power efficiency is crucial. The compact package allows for integration into space-constrained designs.

Detailed and Complete Alternative Models

1. S-1312B18-A4T1U3: Similar specifications but with an adjustable output voltage.
2. S-1312C18-A4T1U3: Higher output current of 200mA but with a slightly higher dropout voltage.
3. S-1312D18-A4T1U3: Lower quiescent current of 10μA but with a narrower input voltage range.

These alternative models provide options for different requirements and design considerations.

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