規格
| 屬性 | 價值 |
| Package / Case | Tube |
| Part Status | Obsolete |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 30V |
| Voltage - Output (Min/Fixed) | 5V |
| Current - Output | 100mA |
| Current - Quiescent (Iq) | 6 mA |
| PSRR | 69dB (120Hz) |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
概述
Description
The NJM78L05UA is a 3-terminal positive voltage regulator integrated circuit, designed to provide a stable 5V output from higher voltage inputs. It belongs to the NJM78L series, known for its compact size and efficiency in applications requiring a low current, typically up to 100mA. The device features internal current limiting and thermal shutdown protection, enhancing reliability and safety during operation. Its low dropout voltage and minimal external components make it suitable for a variety of electronic devices, including battery-powered equipment, where space and power efficiency are critical. The NJM78L05UA is commonly used in consumer electronics, telecommunications, and industrial applications, ensuring consistent voltage regulation in varying conditions. Its UA suffix indicates a particular package style, often a surface-mount package, which facilitates easy integration into modern printed circuit board (PCB) designs.
Equivalent
The NJM78L05UA is a 5V positive voltage regulator. Equivalent products include the LM78L05 series from Texas Instruments or ON Semiconductor, the L78L05 series from STMicroelectronics, and the MC78L05 series from ON Semiconductor. These alternatives typically offer similar voltage regulation capabilities and pin configurations, making them suitable replacements in most applications. Always check the datasheet for exact specifications and pin compatibility.
Features
The NJM78L05UA is a voltage regulator integrated circuit designed to provide a fixed output voltage. Here are its key features:
1. Output Voltage: Provides a fixed output voltage of 5V.
2. Output Current: Capable of delivering up to 100mA.
3. Low Dropout Voltage: Ensures efficient performance with minimal voltage difference between input and output.
4. Thermal Protection: Includes thermal shutdown features to prevent overheating.
5. Short Circuit Protection: Safeguards against output short circuits.
6. Wide Input Voltage Range: Operates effectively over a broad input voltage range.
7. Compact Package: Available in a small and space-efficient surface-mount package, such as SOT-89.
8. Low Quiescent Current: Consumes minimal current when the load is connected.
9. Highly Reliable: Designed for high reliability in various electronic applications.
These features make the NJM78L05UA ideal for use in power management applications where a stable 5V output is required, such as in consumer electronics, communication devices, and other portable electronic equipment.
1. Output Voltage: Provides a fixed output voltage of 5V.
2. Output Current: Capable of delivering up to 100mA.
3. Low Dropout Voltage: Ensures efficient performance with minimal voltage difference between input and output.
4. Thermal Protection: Includes thermal shutdown features to prevent overheating.
5. Short Circuit Protection: Safeguards against output short circuits.
6. Wide Input Voltage Range: Operates effectively over a broad input voltage range.
7. Compact Package: Available in a small and space-efficient surface-mount package, such as SOT-89.
8. Low Quiescent Current: Consumes minimal current when the load is connected.
9. Highly Reliable: Designed for high reliability in various electronic applications.
These features make the NJM78L05UA ideal for use in power management applications where a stable 5V output is required, such as in consumer electronics, communication devices, and other portable electronic equipment.
Pinout
The NJM78L05UA is a three-terminal positive voltage regulator with a fixed output voltage of 5V. It is typically available in a surface-mount SOT-89 package. The device has three pins, each serving a specific function:
1. Pin 1 (Input): This is the input pin where the unregulated voltage is supplied. The input voltage must be higher than 7V to ensure proper regulation.
2. Pin 2 (Ground): This is the ground or common pin. It serves as a reference point for the input and output voltages.
3. Pin 3 (Output): This pin provides the regulated 5V output. It is capable of sourcing up to 100mA of current.
These regulators are commonly used in applications where a stable 5V supply is necessary, especially in low-power devices due to their compact size and efficient regulation.
1. Pin 1 (Input): This is the input pin where the unregulated voltage is supplied. The input voltage must be higher than 7V to ensure proper regulation.
2. Pin 2 (Ground): This is the ground or common pin. It serves as a reference point for the input and output voltages.
3. Pin 3 (Output): This pin provides the regulated 5V output. It is capable of sourcing up to 100mA of current.
These regulators are commonly used in applications where a stable 5V supply is necessary, especially in low-power devices due to their compact size and efficient regulation.
Manufacturer
The NJM78L05UA is manufactured by New Japan Radio Co., Ltd. (NJR). NJR is a Japanese company that specializes in the design, development, and manufacturing of a wide range of electronic components, including semiconductors, microwave products, and integrated circuits. They serve various industries such as automotive, consumer electronics, telecommunications, and industrial markets. The company is known for its expertise in analog technology and offers a diverse portfolio of products catering to different technological needs.
Application
The NJM78L05UA is a low-dropout voltage regulator commonly used in electronic applications requiring a stable 5V output. Its application areas include:
1. Consumer Electronics: Power supply for gadgets like portable devices and home appliances.
2. Embedded Systems: Provides a stable voltage for microcontrollers and other digital circuits.
3. Telecommunication: Powers communication devices such as modems and routers.
4. Automotive Electronics: Used in infotainment systems and other electronic modules.
5. Industrial Automation: Supplies power to sensors and control systems.
6. Power Management: Used in battery-powered devices for efficient power regulation.
Its compact size and reliability make it suitable for space-constrained and critical applications.
1. Consumer Electronics: Power supply for gadgets like portable devices and home appliances.
2. Embedded Systems: Provides a stable voltage for microcontrollers and other digital circuits.
3. Telecommunication: Powers communication devices such as modems and routers.
4. Automotive Electronics: Used in infotainment systems and other electronic modules.
5. Industrial Automation: Supplies power to sensors and control systems.
6. Power Management: Used in battery-powered devices for efficient power regulation.
Its compact size and reliability make it suitable for space-constrained and critical applications.
Package
The NJM78L05UA is a linear voltage regulator with a fixed output of 5V. It is typically housed in a SOT-89 package, which is a small surface-mount package suitable for compact circuit designs.
