SI4126-F-GM

Basic Information Overview

Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: High Efficiency, Low Power Consumption
Package: SOP-8
Essence: Voltage Regulator
Packaging/Quantity: Tape & Reel, 2500 pieces per reel

Specifications and Parameters

Input Voltage Range: 4.5V to 18V
Output Voltage Range: 0.8V to 5.5V
Output Current: Up to 2A
Quiescent Current: 60μA (typical)
Switching Frequency: 1.2MHz (typical)

Detailed and Complete Pin Configuration

VIN: Input Voltage
GND: Ground
FB: Feedback Pin
EN: Enable Pin
SW: Switching Node
PGND: Power Ground
VOUT: Output Voltage
SS: Soft-Start Pin

Functional Characteristics

Wide Input Voltage Range for Versatile Applications
High Efficiency Conversion with Low Power Dissipation
Adjustable Output Voltage through External Resistors
Over-Temperature Protection
Short-Circuit Protection
Under-Voltage Lockout (UVLO) Protection

Advantages and Disadvantages

Advantages: - High Efficiency Operation - Compact SOP-8 Package - Wide Input Voltage Range - Built-in Protection Features

Disadvantages: - Limited Output Current Capacity - Requires External Components for Proper Operation

Applicable Range of Products

Battery-Powered Devices
Portable Electronics
Industrial Control Systems
Automotive Applications
LED Lighting Systems

Working Principles

The SI4126-F-GM is a voltage regulator IC that utilizes a switching converter topology to efficiently regulate the output voltage. It operates by continuously switching the input voltage on and off, and then filtering it to provide a stable output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain the desired output voltage.

Detailed Application Field Plans

Battery-Powered Devices: The SI4126-F-GM can be used in portable devices such as smartphones, tablets, and wearable devices to regulate the battery voltage and ensure stable operation.
Industrial Control Systems: This IC can be employed in various industrial control systems to provide regulated power supply for sensors, actuators, and other components.
Automotive Applications: The SI4126-F-GM is suitable for automotive electronics, including infotainment systems, lighting controls, and power management modules.
LED Lighting Systems: It can be utilized in LED lighting systems to regulate the voltage and current supplied to the LEDs, ensuring optimal performance and longevity.
Power Banks: The SI4126-F-GM can be integrated into power banks to efficiently convert the input voltage from the battery or USB port to the desired output voltage for charging various devices.

Detailed Alternative Models

SI4127-F-GM
SI4128-F-GM
SI4129-F-GM
SI4130-F-GM
SI4131-F-GM

5 Common Technical Questions and Answers

Q: What is the maximum output current of the SI4126-F-GM? A: The SI4126-F-GM can deliver up to 2A of output current.
Q: Can I adjust the output voltage of the SI4126-F-GM? A: Yes, the output voltage can be adjusted within the range of 0.8V to 5.5V using external resistors.
Q: Does the SI4126-F-GM have over-temperature protection? A: Yes, the IC incorporates over-temperature protection to prevent damage due to excessive heat.
Q: What is the typical switching frequency of the SI4126-F-GM? A: The typical switching frequency is 1.2MHz, which helps achieve high efficiency and compact design.
Q: Is the SI4126-F-GM suitable for automotive applications? A: Yes, the IC is designed to meet the requirements of automotive electronics, making it suitable for such applications.

This encyclopedia entry provides an overview of the SI4126-F-GM integrated circuit, including its basic information, specifications, pin configuration, functional characteristics, advantages and disadvantages, applicable range of products, working principles, detailed application field plans, alternative models, and common technical questions and answers.