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UA7805CKCS

TIUA7805CKCS

Texas Instruments
Linear Voltage Regulator IC Positive Fixed 1 Output 1.5A TO-220-3
Active4,694 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The UA7805CKCS is a 3-terminal positive fixed voltage regulator designed to supply a stable 5V output. It can deliver up to 1.5A of output current, making it suitable for a wide range of general-purpose power supply applications. This linear regulator includes internal thermal-overload and short-circuit protection.

Why Choose This Part

This regulator offers internal thermal-overload protection and short-circuit current limiting, enhancing reliability in various operating conditions. Its high power-dissipation capability allows for robust operation. A significant advantage is that an output capacitor is not needed for stability, simplifying circuit design.

Applications

On-card Regulation
Providing localized 5V regulation directly on a PCB to power digital logic or other components from a higher input voltage.
Portable Devices
Regulating power for various portable electronic devices that require a stable 5V supply from a battery or other power source.
Computing & Servers
Supplying regulated 5V power within computing systems or server infrastructure for specific sub-circuits.
Telecommunications Equipment
Ensuring a stable 5V supply in telecommunications applications where robust and reliable power is essential.
General Purpose Power Supplies
As the core component in basic fixed 5V power supply circuits for various electronic projects and products.

Key Specifications

PSRR 78dB ~ 68dB (120Hz)
Output Type Fixed
Mounting Type Through Hole
Package / Case TO-220-3
Current - Output 1.5A
Protection Features Over Temperature, Reverse Polarity
Number of Regulators 1
Output Configuration Positive
Operating Temperature 0degC ~ 125degC
Voltage - Input (Max) 25V
Voltage Dropout (Max) 2V @ 1A
Supplier Device Package TO-220-3
Voltage - Output (Min/Fixed) 5V

Getting Started

To get started with the UA7805CKCS, simply connect the input voltage (up to 25V) to the input pin, ground to the ground pin, and retrieve the regulated 5V from the output pin. While not strictly required for stability, a small bypass capacitor on the input and output is often recommended for noise reduction. Refer to the datasheet for specific PCB layout recommendations and heatsinking considerations for applications requiring the full 1.5A output.

UA7805 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
UA7805CKCS (this part) 3-220 4,694
UA7805CKTTR Tape & Reel 4-263 28,826

Also Consider

LM7805CT STMicroelectronics - This is a pin-compatible alternative from another major manufacturer, offering similar 5V fixed regulation with 1.5A output.
LM2596S-5.0/NOPB TITexas Instruments - For applications requiring higher efficiency than a linear regulator, this is a switching regulator alternative also providing a fixed 5V output.
AMS1117-5.0 Advanced Monolithic Systems - This is a lower current (1A) LDO option that might be suitable for less demanding applications where space is a concern, often available in surface mount packages.

Categories

Power Management > LDO Voltage Regulators Microcontrollers > Texas Instruments