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LM7915CT
+BOMIC REG LINEAR -15V 1A TO220-3
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ManufacturerFairchild Semiconductor
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Mfr. Part #LM7915CT
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Datasheet LM7915CT DataSheet
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Package TO-220 (NDE)-3
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In Stock7275
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Specifications
| Attribute | Value |
| Package | Bulk |
| ProductStatus | Obsolete |
| OutputConfiguration | Negative |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | -35V |
| Voltage-Output(Min/Fixed) | -15V |
| VoltageDropout(Max) | 2V @ 1A |
| Current-Output | 1A |
| Current-Quiescent(Iq) | 6 mA |
| PSRR | 60dB (120Hz) |
| ProtectionFeatures | Over Temperature, Short Circuit |
| OperatingTemperature | 0°C ~ 125°C (TJ) |
| MountingType | Through Hole |
| Package/Case | TO-220-3 |
Overview
Description
The LM7915CT is a voltage regulator integrated circuit designed to provide a stable negative output voltage of -15 volts. Part of the 79xx series of voltage regulators, it is widely used in electronic applications that require a fixed negative voltage for operation. This regulator can deliver output current up to 1.5 amperes, making it suitable for medium-power applications.
The LM7915CT features built-in protection mechanisms, including thermal shutdown, current limiting, and safe area protection, which help prevent damage to the device under overload or fault conditions. It requires only minimal additional components for operation, typically just a couple of capacitors to stabilize the output and improve transient response.
Its TO-220 package offers efficient heat dissipation, and it is commonly used in power supplies, audio equipment, and other electronic circuits where a negative voltage rail is essential. The LM7915CT is valued for its reliability, ease of use, and consistent performance in providing a steady negative voltage.
The LM7915CT features built-in protection mechanisms, including thermal shutdown, current limiting, and safe area protection, which help prevent damage to the device under overload or fault conditions. It requires only minimal additional components for operation, typically just a couple of capacitors to stabilize the output and improve transient response.
Its TO-220 package offers efficient heat dissipation, and it is commonly used in power supplies, audio equipment, and other electronic circuits where a negative voltage rail is essential. The LM7915CT is valued for its reliability, ease of use, and consistent performance in providing a steady negative voltage.
Equivalent
The LM7915CT is a negative voltage regulator providing a -15V output. Equivalent products include:
1. L7915CV
2. MC7915CT
3. UA7915CKCS
4. KA7915
These alternatives serve similar functions and typically offer comparable electrical characteristics, such as the same output voltage and current ratings, making them suitable replacements in most circuits. Always verify specifications with the manufacturer's datasheets to ensure compatibility with your specific application.
1. L7915CV
2. MC7915CT
3. UA7915CKCS
4. KA7915
These alternatives serve similar functions and typically offer comparable electrical characteristics, such as the same output voltage and current ratings, making them suitable replacements in most circuits. Always verify specifications with the manufacturer's datasheets to ensure compatibility with your specific application.
Features
The LM7915CT is a negative voltage regulator designed to provide a stable output voltage of -15V. Key features include:
1. Output Voltage: Fixed at -15V with a tolerance of typically ±2% at room temperature.
2. Output Current: Capable of delivering up to 1.5A of output current.
3. Thermal Protection: Built-in thermal shutdown feature to prevent overheating.
4. Short-Circuit Protection: Internal current limiting to protect against output short circuits.
5. Safe Operating Area Protection: Ensures reliability by maintaining safe power dissipation limits.
6. Input Voltage Range: Typically requires an input voltage of -17V to -35V for proper regulation.
7. Package: Commonly available in a TO-220 package for easy mounting and heat dissipation.
8. Low Noise: Designed to produce low output noise and high ripple rejection.
9. Easy to Use: Minimal external components required for basic operation, often just input and output capacitors for stability.
These features make the LM7915CT suitable for applications requiring a reliable negative voltage supply, such as in power supplies, audio equipment, and various electronic circuits.
1. Output Voltage: Fixed at -15V with a tolerance of typically ±2% at room temperature.
2. Output Current: Capable of delivering up to 1.5A of output current.
3. Thermal Protection: Built-in thermal shutdown feature to prevent overheating.
4. Short-Circuit Protection: Internal current limiting to protect against output short circuits.
5. Safe Operating Area Protection: Ensures reliability by maintaining safe power dissipation limits.
6. Input Voltage Range: Typically requires an input voltage of -17V to -35V for proper regulation.
7. Package: Commonly available in a TO-220 package for easy mounting and heat dissipation.
8. Low Noise: Designed to produce low output noise and high ripple rejection.
9. Easy to Use: Minimal external components required for basic operation, often just input and output capacitors for stability.
These features make the LM7915CT suitable for applications requiring a reliable negative voltage supply, such as in power supplies, audio equipment, and various electronic circuits.
Pinout
The LM7915CT is a three-terminal negative voltage regulator with a fixed output voltage of -15V. It is part of the LM79XX series, designed to provide a stable and regulated negative voltage. The device is commonly used in various electronic applications to supply a consistent -15V from a higher negative input voltage.
Pin Count and Functions:
1. Pin 1 (Input): This is where the unregulated negative input voltage is applied. The input voltage must be more negative than the output voltage by at least the dropout voltage for proper regulation.
2. Pin 2 (Ground/ Common): This pin is connected to the circuit ground. It serves as the reference point for the input and output voltages.
3. Pin 3 (Output): This pin provides the regulated negative output voltage (-15V). It should be connected to the load that requires regulation.
The LM7915CT typically comes in a TO-220 package and is capable of supplying up to 1.5A of output current. It includes features such as current limiting, thermal shutdown, and safe-area compensation, ensuring robust performance and protection against overload conditions.
Pin Count and Functions:
1. Pin 1 (Input): This is where the unregulated negative input voltage is applied. The input voltage must be more negative than the output voltage by at least the dropout voltage for proper regulation.
2. Pin 2 (Ground/ Common): This pin is connected to the circuit ground. It serves as the reference point for the input and output voltages.
3. Pin 3 (Output): This pin provides the regulated negative output voltage (-15V). It should be connected to the load that requires regulation.
The LM7915CT typically comes in a TO-220 package and is capable of supplying up to 1.5A of output current. It includes features such as current limiting, thermal shutdown, and safe-area compensation, ensuring robust performance and protection against overload conditions.
Manufacturer
The LM7915CT is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company headquartered in Dallas, Texas. It designs and manufactures semiconductors and various integrated circuits, which are sold to electronics designers and manufacturers globally. The company is known for its innovation in analog and embedded processing technologies, which are key components in a wide range of electronic devices.
Application
The LM7915CT is a voltage regulator that provides a stable -15V output, making it suitable for various applications. Common areas include:
1. Power Supply Design: Used in negative voltage power supplies to provide regulated output.
2. Audio Equipment: Ensures stable negative voltage for audio amplifiers and mixers.
3. Communication Devices: Provides necessary voltage for certain communication equipment.
4. Instrumentation: Used in test equipment and measurement devices requiring precise voltage regulation.
5. Embedded Systems: Supplies negative voltage for microcontroller and microprocessor systems.
6. Industrial Automation: Supports control systems needing reliable voltage levels.
Overall, its key role is to maintain a consistent negative voltage across various electronic circuits and devices.
1. Power Supply Design: Used in negative voltage power supplies to provide regulated output.
2. Audio Equipment: Ensures stable negative voltage for audio amplifiers and mixers.
3. Communication Devices: Provides necessary voltage for certain communication equipment.
4. Instrumentation: Used in test equipment and measurement devices requiring precise voltage regulation.
5. Embedded Systems: Supplies negative voltage for microcontroller and microprocessor systems.
6. Industrial Automation: Supports control systems needing reliable voltage levels.
Overall, its key role is to maintain a consistent negative voltage across various electronic circuits and devices.
Package
The LM7915CT is a negative voltage regulator with a TO-220 package type. The TO-220 package is commonly used for power semiconductors and features three leads with a metal tab for heat dissipation, making it suitable for mounting on heat sinks.
