S-817B51AY-B2-U

Product Overview

Category

S-817B51AY-B2-U belongs to the category of voltage regulators.

Use

This product is primarily used for voltage regulation in electronic circuits.

Characteristics

• Package: The S-817B51AY-B2-U comes in a compact surface-mount package.
• Essence: It is a low-dropout voltage regulator with a fixed output voltage.
• Packaging/Quantity: The product is typically packaged in reels or tubes, with varying quantities depending on the supplier.

Specifications

The specifications of the S-817B51AY-B2-U are as follows:

• Input Voltage Range: 2.0V to 6.0V
• Output Voltage: 5.1V ±2%
• Dropout Voltage: 0.15V (typical)
• Output Current: 50mA (maximum)
• Quiescent Current: 40µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The pin configuration of the S-817B51AY-B2-U is as follows:

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| | --| VIN VOUT |-- Pin 1 --| GND NC |-- Pin 2 |___________| ```

Functional Features

The S-817B51AY-B2-U offers the following functional features:

• Low dropout voltage: The regulator maintains a stable output voltage even when the input voltage is close to the desired output voltage.
• Low quiescent current: The device consumes minimal current when in standby mode, resulting in improved energy efficiency.
• Short-circuit protection: The regulator is designed to protect against short-circuits, preventing damage to the circuitry.
• Thermal shutdown protection: In case of excessive temperature, the regulator automatically shuts down to prevent overheating.

Advantages and Disadvantages

Advantages

• Compact package size allows for easy integration into space-constrained designs.
• Low dropout voltage ensures efficient power conversion.
• Short-circuit and thermal shutdown protection enhance the reliability of the circuit.

Disadvantages

• Limited output current capability may restrict its use in high-power applications.
• Fixed output voltage may not be suitable for all voltage regulation requirements.

Working Principles

The S-817B51AY-B2-U operates based on the principle of a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. This ensures that the output voltage remains stable even when the input voltage fluctuates.

Detailed Application Field Plans

The S-817B51AY-B2-U finds application in various electronic devices, including but not limited to:

1. Battery-powered portable devices: The low quiescent current and low dropout voltage make it ideal for prolonging battery life in devices such as smartphones, tablets, and portable media players.
2. IoT devices: With its compact size and efficient power conversion, the regulator can be used in IoT devices that require stable voltage supply, such as sensors, smart home devices, and wearables.
3. Automotive electronics: The regulator's wide operating temperature range and short-circuit protection make it suitable for automotive applications, including infotainment systems, lighting controls, and engine management systems.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the S-817B51AY-B2-U include:

1. S-817A Series: These regulators have different fixed output voltages and package options, catering to a wider range of voltage regulation requirements.
2. S-817B Series: Similar to the S-817B51AY-B2-U, this series offers various fixed output voltages with low dropout voltage characteristics.
3. S-817C Series: These regulators provide adjustable output voltage options, allowing for greater flexibility in voltage regulation.

In conclusion, the S-817B51AY-B2-U is a compact and efficient voltage regulator suitable for various electronic applications. Its low dropout voltage, low quiescent current, and protection features make it a reliable choice for designers seeking stable voltage regulation.