STN817A Product Overview

Introduction

The STN817A is a versatile electronic component that belongs to the category of voltage regulators. This device is commonly used in various electronic applications to regulate and stabilize voltage levels, ensuring consistent and reliable performance of connected circuits.

Basic Information Overview

• Category: Voltage Regulator
• Use: To regulate and stabilize voltage levels in electronic circuits
• Characteristics: High precision, low dropout voltage, thermal shutdown protection
• Package: TO-220, TO-252, DPAK
• Essence: Ensuring stable voltage supply to electronic components
• Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

The STN817A voltage regulator is designed to operate within a specific range of input and output voltages, with variations in current handling capacity and thermal characteristics. Detailed specifications include: - Input Voltage Range: 4.5V to 18V - Output Voltage Range: 1.2V to 15V - Maximum Output Current: 1.5A - Dropout Voltage: 1V at 1A - Thermal Shutdown Temperature: 150°C

Detailed Pin Configuration

The STN817A features a standard pin configuration, typically consisting of input, output, and ground pins, along with additional pins for thermal protection and enable/disable functions. The detailed pinout is as follows: 1. VIN (Input Voltage) 2. GND (Ground) 3. VOUT (Output Voltage) 4. NC (No Connection) 5. EN (Enable/Disable) 6. Thermal Protection

Functional Features

The STN817A offers several functional features that enhance its utility in electronic circuits, including: - High Precision Regulation: Ensures stable output voltage under varying load conditions - Low Dropout Voltage: Minimizes power loss and heat dissipation - Thermal Shutdown Protection: Safeguards the device from overheating - Enable/Disable Control: Allows for convenient power management

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• Low dropout voltage
• Thermal protection for enhanced reliability
• Compact package options for space-constrained designs

Disadvantages

• Limited maximum output current compared to higher-power regulators
• Higher dropout voltage at lower input voltages

Working Principles

The STN817A operates based on the principle of feedback control, where it compares the actual output voltage with a reference voltage and adjusts the internal circuitry to maintain the desired output level. It utilizes a combination of semiconductor devices and control circuitry to achieve precise voltage regulation.

Detailed Application Field Plans

The STN817A finds extensive application in various electronic systems, including: - Battery-powered devices - Automotive electronics - Industrial control systems - Consumer electronics - Telecommunication equipment

Detailed and Complete Alternative Models

Several alternative models offer similar functionality to the STN817A, providing flexibility in design and component selection. Some notable alternatives include: - LM317: A widely used adjustable voltage regulator with similar characteristics - L78xx Series: Fixed voltage regulators available in various output voltage options - LT1083: High-current adjustable voltage regulator suitable for demanding applications

In conclusion, the STN817A voltage regulator serves as a crucial component in numerous electronic systems, offering precise voltage regulation and thermal protection. Its compact package options and functional features make it a preferred choice for diverse applications, despite certain limitations in maximum output current and dropout voltage.

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