S-817B21AY-Z2-U

Product Overview

Category

S-817B21AY-Z2-U belongs to the category of voltage regulators.

Use

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

Characteristics

• Package: The S-817B21AY-Z2-U comes in a small surface-mount package.
• Essence: It is a low-dropout voltage regulator with a fixed output voltage.
• Packaging/Quantity: This product is typically packaged in reels or tubes, with a quantity of 3000 units per reel.

Specifications

The specifications of the S-817B21AY-Z2-U are as follows:

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 2.1V
• Output Current: 50mA
• Dropout Voltage: 160mV (typical)
• Quiescent Current: 20µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-817B21AY-Z2-U has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VOUT: Output voltage pin

Functional Features

The functional features of the S-817B21AY-Z2-U include:

• 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 power 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: - Small package size allows for space-saving designs. - Low dropout voltage ensures efficient power conversion. - Short-circuit and thermal protection enhance the reliability of the circuit.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Fixed output voltage may restrict flexibility in certain designs.

Working Principles

The S-817B21AY-Z2-U operates based on a voltage regulation principle. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage, even when the input voltage fluctuates.

Detailed Application Field Plans

The S-817B21AY-Z2-U is commonly used in various electronic devices and circuits, including:

1. Battery-powered devices: It can regulate the voltage supplied by batteries to ensure consistent performance.
2. Portable electronics: The low quiescent current makes it suitable for power-sensitive applications like smartphones and tablets.
3. Industrial control systems: It can provide stable voltage for microcontrollers, sensors, and other components in industrial automation.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the S-817B21AY-Z2-U include:

1. S-817A21ANB-CUJTFG
2. XC6206P302MR-G
3. LP2985AIM5X-2.1/NOPB

These alternatives have comparable specifications and can be considered as substitutes depending on specific requirements.

In conclusion, the S-817B21AY-Z2-U is a voltage regulator with a fixed output voltage of 2.1V. It offers low dropout voltage, low quiescent current, and various protection features. This product finds applications in battery-powered devices, portable electronics, and industrial control systems. Alternative models such as S-817A21ANB-CUJTFG, XC6206P302MR-G, and LP2985AIM5X-2.1/NOPB can be considered as alternatives to the S-817B21AY-Z2-U.