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LM7905CT

Name: LM7905CT
Rating: 4.7 (12 reviews)

IC REG LINEAR -5V 1A TO220-3

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規格

Part Status	Obsolete
Output Configuration	Negative
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	-35V
Voltage - Output (Min/Fixed)	-5V
Voltage Dropout (Max)	2V @ 1A (Typ)
Current - Output	1A
Current - Quiescent (Iq)	6 mA
PSRR	60dB (120Hz)
Protection Features	Over Temperature, Short Circuit
Operating Temperature	0°C ~ 125°C
Mounting Type	Through Hole
Package / Case	TO-220-3
Supplier Device Package	TO-220-3
Base Product Number	LM7905

概述

Description

The LM7905CT is a linear voltage regulator designed to provide a stable output voltage of -5V. It is part of the LM79xx series of voltage regulators, which are designed for negative voltage regulation. This component typically features a maximum output current of 1A and operates over a wide input voltage range, making it suitable for various applications, including powering negative voltage circuits in electronic devices.
Key features include thermal overload protection, short-circuit protection, and a simple three-terminal design, facilitating easy integration into circuits. The LM7905CT also offers good load and line regulation, ensuring consistent performance under varying conditions.
It is commonly packaged in TO-220 or TO-263 formats, which helps in effective heat dissipation. Applications include negative power supplies, audio equipment, and operational amplifiers requiring negative references. Proper heat sinking is recommended to manage heat dissipation, especially at higher loads.

Features

The LM7905CT is a voltage regulator designed to provide a stable -5V output. Key features include:
1. Output Voltage: Delivers a fixed output of -5V, suitable for various low-voltage applications.
2. Current Output: Capable of supplying up to 1A of output current, making it suitable for powering moderate loads.
3. Thermal Protection: Includes built-in thermal overload protection to safeguard the device under excessive heat conditions.
4. Short-Circuit Protection: Features internal short-circuit protection to prevent damage during fault conditions.
5. Input Voltage Range: Operates with an input voltage range typically from -7V to -25V.
6. Low Dropout: Maintains a low dropout voltage, ensuring stable performance even at lower input voltages.
7. Package Type: Available in a TO-220 package, facilitating easy mounting and heat dissipation.
The LM7905CT is widely used in powering negative voltage circuits, audio equipment, and other electronic devices requiring stable -5V regulation.

Package

The LM7905CT is commonly packaged in a TO-220 package type. This package features a metal tab for heat dissipation and is designed for through-hole mounting.

Pinout

The LM7905CT is a negative voltage regulator with a pin count of 3. Its primary function is to provide a stable output voltage of -5V, making it suitable for various electronic applications requiring a regulated negative voltage supply.
Pinout:
1. Input (Vin): This pin receives the input voltage, which should be more negative than the desired output.
2. Ground (GND): This pin is connected to the system ground.
3. Output (Vout): This pin delivers the regulated negative output voltage of -5V.
The LM7905CT also features thermal overload protection and short-circuit protection, enhancing its reliability in circuit applications. It is commonly used in conjunction with positive voltage regulators to create dual power supply systems.

Manufacturer

The LM7905CT is manufactured by multiple companies, with Texas Instruments and ON Semiconductor being two of the most recognized manufacturers. The LM7905 is a voltage regulator that provides a fixed output of -5V, commonly used in various electronic applications to regulate negative voltages.
Texas Instruments is a global semiconductor design and manufacturing company known for its innovations in analog and embedded processing technologies. It serves a wide range of markets, including automotive, industrial, and consumer electronics.
ON Semiconductor is also a leading supplier of semiconductor-based solutions. The company focuses on energy-efficient electronics, providing a variety of products for automotive, industrial, and communication applications.
Both companies are key players in the semiconductor industry, providing essential components for modern electronic systems.

Application

The LM7905CT is a voltage regulator that provides a stable -5V output. Its application areas include powering analog circuits, providing reference voltages for op-amps, serving as a negative supply for operational amplifiers, and powering sensors or microcontrollers that require a negative voltage rail. It's commonly used in audio equipment, telecommunications, and industrial systems where negative voltage is necessary for proper functionality.

Equivalent

Equivalent products to the LM7905CT voltage regulator include the 79L05, LM7905, MC79M05, and L7905CV. These components provide similar functionality, offering a fixed output voltage of -5V with comparable current ratings and specifications. Always check datasheets for specific application requirements and compatibility.