Overview of the uA78Mxx Positive-Voltage Regulators
The uA78Mxx datasheet by Texas Instruments details a series of fixed-voltage regulators originally released in June 1976 and most recently revised in January 2015. These regulators are crafted for a vast range of applications requiring consistent voltage supply up to 500 mA, such as on-card regulation in computing devices, portable electronics, and telecommunications equipment. The series includes several models: uA78MO5, uA78MO6, uA78MO8, uA78MO9, uA78M10, uA78M12, and uA78M33, which are documented with detailed technical specifications and guidelines for proper usage and implementation. The first two pages of the datasheet provide an introduction, features summary, applications, device information, and a brief schematic overview.
Key Features
The uA78Mxx regulators come with integral safety features that significantly enhance their reliability in various electronic applications. These include internal thermal-overload protection and internal short-circuit current limiting, alongside an output transistor safe-area compensation. The designs eliminate the need for external components, contributing to reduction in noise issues and easing distribution problems commonly related to single-point regulation.
Applications
These voltage regulators are optimized for applications where consistent voltage delivery is essential, particularly in on-card regulation, enabling noise reduction and solving distribution problems. Additionally, they are suitable for portable devices, serving as a reliable power source, and also have significant uses in computing and server infrastructures, as well as telecommunications equipment.
Available Packages and Part Numbers
For design flexibility and to meet various power management needs, the uA78Mxx regulators are provided in different package types including SOT-223, TO-220, and TO-252. Detailed package dimensions and other specifications are available in the datasheet, along with a comprehensive list of part numbers (referenced as UAZ8Mxx) for order placement and inventory management.
Regulator Schematic and Advanced Information
A simplified schematic is illustrated to demonstrate a basic configuration of the voltage regulators in circuit. The datasheet includes extended sections covering detailed information such as typical characteristics, functional block diagrams, feature descriptions, device functional modes, and complete electrical characteristics. These sections aid designers and engineers in thoroughly understanding the regulators’ operations and specifications for accurate deployment.
The datasheet continues to detail revisions, application guides, layout guidelines, and support resources to aid proper device implementation and maximize performance. Users are encouraged to refer to the full datasheet for detailed technical information and to ensure compliance with absolute maximum ratings, power supply recommendations, and layout orientations specific to each model within the product line.
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