U490B-M Product Encyclopedia Entry

Product Overview

Category

The U490B-M belongs to the category of integrated circuits (ICs) and is specifically classified as a voltage regulator IC.

Use

This product is primarily used for regulating voltage in electronic circuits, ensuring a stable and consistent output voltage despite fluctuations in input voltage or load conditions.

Characteristics

• Stability: The U490B-M offers high stability in voltage regulation, making it suitable for sensitive electronic devices.
• Efficiency: It operates with high efficiency, minimizing power loss during voltage conversion.
• Compact Package: The IC is housed in a compact package, making it suitable for space-constrained applications.
• Low Noise: It produces minimal electrical noise, contributing to the overall performance of the circuit.

Package

The U490B-M is available in a small outline integrated circuit (SOIC) package, which provides ease of handling and integration into circuit designs.

Essence

The essence of the U490B-M lies in its ability to provide reliable voltage regulation, contributing to the overall functionality and performance of electronic systems.

Packaging/Quantity

The U490B-M is typically supplied in reels containing a specific quantity, such as 2500 units per reel, catering to production and manufacturing requirements.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 1.25V to 20V
• Output Current: Up to 1.5A
• Operating Temperature Range: -40°C to 125°C
• Quiescent Current: 100µA (typical)

Detailed Pin Configuration

The U490B-M features a standard pin configuration with pins designated for input voltage, ground, output voltage, and other essential connections. Refer to the datasheet for the detailed pinout diagram.

Functional Features

• Voltage Regulation: The IC maintains a stable output voltage despite variations in input voltage and load conditions.
• Overcurrent Protection: It incorporates overcurrent protection to safeguard the circuit and connected components.
• Thermal Shutdown: The U490B-M includes thermal shutdown functionality to prevent overheating and ensure safe operation.

Advantages and Disadvantages

Advantages

• Reliable voltage regulation
• High efficiency
• Compact form factor
• Overcurrent protection

Disadvantages

• Limited maximum output current compared to higher-power regulators
• Sensitive to improper handling and static discharge

Working Principles

The U490B-M utilizes feedback control mechanisms to compare the actual output voltage with a reference voltage, adjusting the internal circuitry to maintain the desired output voltage level. This process ensures consistent and accurate voltage regulation.

Detailed Application Field Plans

The U490B-M finds extensive application in various electronic systems, including: - Power supplies - Battery charging circuits - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

• U490A-N: Similar voltage regulator IC with enhanced current-handling capabilities
• U490C-L: Lower power variant suitable for low-current applications
• U490D-P: Higher precision version with tighter voltage regulation specifications

In conclusion, the U490B-M stands as a reliable and efficient voltage regulator IC, catering to diverse electronic applications with its stable performance and compact design.

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