LM7912CT

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LM7912CT

IC REG LINEAR -12V 1A TO220-3

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規格

Package Tube
ProductStatus Obsolete
OutputConfiguration Negative
OutputType Fixed
NumberofRegulators 1
Voltage-Input(Max) -35V
Voltage-Output(Min/Fixed) -12V
VoltageDropout(Max) 2V @ 1A (Typ)
Current-Output 1A
Current-Quiescent(Iq) 6 mA
PSRR 60dB (120Hz)
ProtectionFeatures Over Temperature, Short Circuit
OperatingTemperature 0°C ~ 125°C
MountingType Through Hole
Package/Case TO-220-3

概述

Description

The LM7912CT is a voltage regulator in the LM79xx series, designed to provide a stable negative output voltage. Specifically, it delivers a fixed -12V output from a higher (more negative) input voltage. It's commonly used in electronic circuits requiring stable power supply for negative rail applications. The device offers features such as thermal shutdown, current limit protection, and safe area protection, ensuring reliable operation even under challenging conditions.
Packaged typically in a TO-220 form factor, the LM7912CT is suitable for various applications, including consumer electronics, automotive systems, and industrial equipment. Its ability to maintain a consistent voltage output makes it essential for circuits where precise voltage regulation is crucial, such as in audio equipment and power supply units.
Key specifications include an input voltage range of -14.5V to -35V, a maximum output current of 1.5A, and a dropout voltage of about 2V. The LM7912CT is favored for its robustness, ease of use, and cost-effectiveness, making it a popular choice for engineers and hobbyists alike.

Features

The LM7912CT is a fixed-output voltage regulator designed to provide a stable -12V output with a maximum current of 1.5A. Key features include:
1. Negative Voltage Regulation: It provides negative voltage regulation, making it suitable for dual-supply applications.
2. Output Voltage: Fixed -12V output, eliminating the need for external components for voltage adjustment.
3. Current Capacity: Can deliver up to 1.5A of output current.
4. Thermal Overload Protection: Built-in protection against overheating, ensuring reliable operation under varying conditions.
5. Short-Circuit Protection: Includes short-circuit protection to prevent damage from excessive current draw.
6. Safe Operating Area (SOA) Protection: Ensures the device operates within safe limits, enhancing reliability.
7. Input Voltage Range: Requires a minimum input voltage of approximately -14.5V to function correctly, and can handle higher input voltages up to -35V.
8. Package: Available in a TO-220 package, providing a robust solution for various applications.
These features make the LM7912CT ideal for use in power supply designs where a stable negative voltage is essential.

Package

The LM7912CT is a voltage regulator with a TO-220 package. The TO-220 is a type of electronic component package that typically features three leads and a metal tab for mounting and heat dissipation. It is commonly used for power components like voltage regulators due to its ability to handle higher power levels.

Pinout

The LM7912CT is a voltage regulator IC that provides a fixed negative output voltage of -12V. It is part of the LM79XX series, which are negative voltage regulators. The LM7912CT typically comes in a TO-220 package with three pins. Here's a brief description of its pin configuration and function:
1. Pin 1 (Input): This pin is where the unregulated input voltage is supplied. The input voltage must be more negative than the output voltage (typically more negative than -14V) for proper regulation.
2. Pin 2 (Ground): This is the ground pin, which serves as a common reference point for the input and output voltages.
3. Pin 3 (Output): This pin provides the regulated output voltage of -12V. It is connected to the load that requires the regulated voltage.
The LM7912CT is commonly used in power supply circuits to provide a stable -12V output for various electronic applications, ensuring consistent performance despite variations in input voltage or load conditions.

Manufacturer

The LM7912CT is a negative voltage regulator, and it is manufactured by several semiconductor companies, with Texas Instruments being one of the primary manufacturers. Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits. They are known for producing a wide range of electronic components used in various applications, from consumer electronics to industrial equipment. Texas Instruments has a strong focus on innovation and development in the technology sector, consistently working on advancing electronic design and manufacturing processes.

Application

The LM7912CT is a negative voltage regulator providing a stable -12V output. It is commonly used in power supply circuits for electronic devices requiring dual supply voltages, such as operational amplifiers and analog circuits. Its applications include audio equipment, instrumentation systems, and industrial control systems. The LM7912CT ensures voltage regulation and protection against overloads and short circuits, making it suitable for maintaining stable performance in complex electronic systems.

Equivalent

Equivalent products to the LM7912CT, a negative voltage regulator providing -12V output, include the L7912CV, MC7912CT, and UA7912CKT. These components offer similar functionality and specifications, suitable for applications requiring regulated -12V output. Always check the datasheets to ensure compatibility with specific circuit requirements.

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