S-1206B45-U3T1U

Basic Information Overview

Category: Electronic Component
Use: Voltage Regulator
Characteristics: High efficiency, low power consumption
Package: SOT-23-6
Essence: Step-down voltage regulator
Packaging/Quantity: Tape and Reel / 3000 units per reel

Specifications

• Input Voltage Range: 4.5V to 24V
• Output Voltage: 3.3V
• Output Current: 200mA
• Dropout Voltage: 150mV (typical)
• Quiescent Current: 30µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1206B45-U3T1U has a total of six pins:

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

Functional Features

• Step-down voltage regulation: The S-1206B45-U3T1U efficiently converts higher input voltages to a stable 3.3V output.
• Low power consumption: With a quiescent current of only 30µA, the regulator minimizes power wastage.
• High efficiency: The device achieves high efficiency levels, reducing energy loss during voltage conversion.
• Thermal shutdown protection: The regulator includes built-in thermal shutdown protection to prevent overheating.

Advantages and Disadvantages

Advantages: - Compact package size allows for easy integration into space-constrained designs. - Wide input voltage range enables compatibility with various power sources. - Low dropout voltage ensures efficient operation even with small voltage differentials. - Excellent load and line regulation for stable output voltage.

Disadvantages: - Limited output current of 200mA may not be sufficient for high-power applications. - Requires external components (inductor, capacitors) for proper operation.

Working Principles

The S-1206B45-U3T1U is a step-down voltage regulator that utilizes a switching converter topology. It operates by rapidly switching an internal transistor on and off to control the amount of voltage delivered to the load. This switching action allows for efficient voltage conversion while minimizing power dissipation.

When the input voltage is applied, the regulator's internal circuitry adjusts the duty cycle of the switching transistor to maintain a constant 3.3V output voltage. The feedback pin (FB) monitors the output voltage and provides feedback to the control circuit, ensuring stable regulation.

Detailed Application Field Plans

The S-1206B45-U3T1U is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearables benefit from the regulator's ability to efficiently convert battery voltages to a stable 3.3V supply.
2. IoT devices: Internet of Things (IoT) devices often operate on low voltages and require compact regulators with low power consumption, making the S-1206B45-U3T1U an ideal choice.
3. Industrial automation: Control systems, sensors, and actuators in industrial automation applications can utilize this regulator to ensure stable and reliable power supply.

Detailed and Complete Alternative Models

1. S-1206B33-U3T1U: Step-down voltage regulator with a fixed 3.3V output and similar specifications.
2. S-1206B50-U3T1U: Step-down voltage regulator with a fixed 5V output and similar characteristics.
3. S-1206B25-U3T1U: Step-down voltage regulator with a fixed 2.5V output and comparable features.

These alternative models offer different output voltages while maintaining the same package, characteristics, and pin configuration as the S-1206B45-U3T1U.

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