S-1206B21-U3T1U

Basic Information Overview

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

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage: 1.8V
• Output Current: 200mA
• Dropout Voltage: 160mV (typical)
• 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

1. VIN: Input Voltage
2. GND: Ground
3. EN: Enable Pin
4. FB: Feedback Pin
5. VOUT: Output Voltage

Functional Features

• Low dropout voltage ensures efficient power conversion.
• Wide input voltage range allows for versatile applications.
• Excellent line and load regulation for stable output voltage.
• Low quiescent current minimizes power consumption.
• Enable pin provides control over the regulator's operation.

Advantages

• High efficiency results in reduced power dissipation.
• Small package size enables space-saving designs.
• Wide operating temperature range suits various environments.
• Low dropout voltage allows for reliable performance even with low input voltages.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Single fixed output voltage restricts flexibility in certain scenarios.
• SOT-23-5 package may require additional thermal considerations for heat dissipation.

Working Principles

The S-1206B21-U3T1U is a step-down linear regulator that converts higher input voltages to a stable lower output voltage. It achieves this by utilizing a pass transistor and feedback mechanism to regulate the voltage across the load. The enable pin allows for control over the regulator's operation, enabling power-saving modes when necessary.

Detailed Application Field Plans

The S-1206B21-U3T1U is commonly used in battery-powered devices, such as portable electronics, IoT devices, and wireless communication modules. Its low dropout voltage and high efficiency make it suitable for applications where power conservation is crucial. Additionally, its small package size makes it ideal for space-constrained designs.

Detailed and Complete Alternative Models

1. S-1206B18-U3T1U: Output Voltage - 1.8V, Output Current - 150mA
2. S-1206B25-U3T1U: Output Voltage - 2.5V, Output Current - 200mA
3. S-1206B33-U3T1U: Output Voltage - 3.3V, Output Current - 200mA

These alternative models offer different output voltages while maintaining similar characteristics and package options.

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