SI8251-IQ

Product Overview

Category

SI8251-IQ belongs to the category of integrated circuits (ICs).

Use

The SI8251-IQ is primarily used for power management applications.

Characteristics

• Integrated circuit
• Power management functionality
• High efficiency
• Compact size

Package

The SI8251-IQ is available in a small form factor package, suitable for surface mount technology (SMT) assembly.

Essence

The essence of SI8251-IQ lies in its ability to efficiently manage power in various electronic devices.

Packaging/Quantity

The SI8251-IQ is typically packaged in reels or trays, with a quantity of 2500 units per reel/tray.

Specifications

• Input voltage range: 2.7V - 5.5V
• Output voltage range: 0.8V - 3.6V
• Maximum output current: 1A
• Operating temperature range: -40°C to +85°C
• Efficiency: Up to 95%
• Switching frequency: 1.2MHz

Detailed Pin Configuration

The SI8251-IQ has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. FB: Feedback pin
5. SW: Switching pin
6. VOUT: Output voltage pin

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• High efficiency ensures minimal power loss during operation.
• Enable pin provides control over the device's power state.
• Feedback pin enables voltage regulation and stability.
• Switching pin facilitates efficient power conversion.
• Output voltage pin delivers regulated power to the load.

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption.
• Compact size allows for integration into space-constrained designs.
• Wide input voltage range enhances versatility.
• Enable pin provides flexibility in power management.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Operating temperature range may restrict usage in extreme environments.

Working Principles

The SI8251-IQ operates based on a switching regulator topology. It utilizes high-frequency switching to efficiently convert the input voltage to the desired output voltage. The device incorporates control circuitry to regulate the output voltage and maintain stability under varying load conditions.

Detailed Application Field Plans

The SI8251-IQ finds applications in various fields, including:

1. Portable electronic devices: Enables efficient power management in smartphones, tablets, and wearable devices.
2. Industrial equipment: Facilitates power regulation in industrial automation systems and control panels.
3. Automotive electronics: Supports power management in automotive infotainment systems and advanced driver-assistance systems (ADAS).
4. IoT devices: Provides power efficiency in Internet of Things (IoT) devices such as smart home appliances and sensors.

Detailed and Complete Alternative Models

1. SI8252-IQ: Similar to SI8251-IQ with higher maximum output current of 2A.
2. SI8250-IQ: Similar to SI8251-IQ with lower maximum output current of 500mA.
3. SI8261-IQ: Enhanced version of SI8251-IQ with additional features such as overcurrent protection and thermal shutdown.

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