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LM2676SX-ADJ
IC REG BUCK ADJ 3A TO263
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規格
| Series | SIMPLE SWITCHER® |
| Part Status | Obsolete |
| Base Product Number | LM2676 |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 8V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | 37V |
| Current - Output | 3A |
| Frequency - Switching | 260kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package | TO-263-8, D2PAK (7 Leads + Tab), TO-263CA |
| Supplier Device Package | TO-263 (DDPAK-7) |
| Packaging | Tape & Reel (TR) |
概述
Description
The LM2676SX-ADJ is a high-efficiency step-down voltage regulator from Texas Instruments. It's designed to deliver up to 3A of continuous output current with excellent line and load regulation. The device operates with a wide input voltage range and provides an adjustable output voltage. It integrates a 200 kHz fixed-frequency switching regulator, which simplifies the design by minimizing external components and reducing the overall footprint.
Key features include a low dropout, high efficiency due to the use of a low RDS(on) MOSFET, and a current-mode control scheme for superior load and line response. The LM2676SX-ADJ also includes built-in features like thermal shutdown, cycle-by-cycle current limiting, and a frequency synchronization pin for reducing interference in multi-regulator setups.
This regulator is suitable for a variety of applications, including distributed power systems, battery-powered devices, and industrial equipment, where efficiency and reliability are critical. Its adjustable output capability makes it versatile for different voltage requirements, while its robust design ensures stable operation under varying conditions.
Key features include a low dropout, high efficiency due to the use of a low RDS(on) MOSFET, and a current-mode control scheme for superior load and line response. The LM2676SX-ADJ also includes built-in features like thermal shutdown, cycle-by-cycle current limiting, and a frequency synchronization pin for reducing interference in multi-regulator setups.
This regulator is suitable for a variety of applications, including distributed power systems, battery-powered devices, and industrial equipment, where efficiency and reliability are critical. Its adjustable output capability makes it versatile for different voltage requirements, while its robust design ensures stable operation under varying conditions.
Features
The LM2676SX-ADJ is a versatile step-down voltage regulator designed for efficiency and simplicity in power supply solutions. Key features include:
1. Adjustable Output Voltage: The device allows for an adjustable output voltage, enhancing flexibility for various applications.
2. High Efficiency: It operates with up to 90% efficiency, minimizing power loss and thermal dissipation.
3. Wide Input Voltage Range: The LM2676SX-ADJ supports a broad input range, accommodating different power source voltages.
4. Fixed Frequency Operation: It operates at a fixed frequency of 260 kHz, aiding in predictable performance and reduced output noise.
5. 5A Output Current: Capable of delivering up to 5 amperes of continuous output current, suitable for high-power applications.
6. Integrated Switch: The internal switch reduces the need for external components, simplifying the design and improving reliability.
7. Thermal and Current Limit Protection: Built-in protections help prevent damage from overheating and overloading.
8. Easy-to-Use: The device is designed to require minimal external components, streamlining the design process.
Together, these features make the LM2676SX-ADJ an ideal choice for efficient and robust power supply designs in various electronic systems.
1. Adjustable Output Voltage: The device allows for an adjustable output voltage, enhancing flexibility for various applications.
2. High Efficiency: It operates with up to 90% efficiency, minimizing power loss and thermal dissipation.
3. Wide Input Voltage Range: The LM2676SX-ADJ supports a broad input range, accommodating different power source voltages.
4. Fixed Frequency Operation: It operates at a fixed frequency of 260 kHz, aiding in predictable performance and reduced output noise.
5. 5A Output Current: Capable of delivering up to 5 amperes of continuous output current, suitable for high-power applications.
6. Integrated Switch: The internal switch reduces the need for external components, simplifying the design and improving reliability.
7. Thermal and Current Limit Protection: Built-in protections help prevent damage from overheating and overloading.
8. Easy-to-Use: The device is designed to require minimal external components, streamlining the design process.
Together, these features make the LM2676SX-ADJ an ideal choice for efficient and robust power supply designs in various electronic systems.
Package
The LM2676SX-ADJ is a voltage regulator IC from Texas Instruments, featuring an adjustable output. It comes in a TO-263 surface-mount package, also known as DDPAK/TO-263-7, which typically has 7 pins. This package is designed for efficient heat dissipation and is suitable for applications with space constraints.
Pinout
The LM2676SX-ADJ is a step-down voltage regulator from Texas Instruments. It comes in a TO-263 package with a 5-pin configuration. Here is a brief overview of its pin functionality:
1. VIN (Pin 1): This is the input voltage pin where the device receives the supply voltage, which can range between 8V to 40V.
2. SW (Pin 2): This is the switch pin, connected to the internal power MOSFET. It is used for switching the voltage to the output.
3. GND (Pin 3): This pin is the ground return path for the device.
4. FB (Pin 4): The feedback pin is used to set the output voltage by connecting a resistor divider from the output to ground. This allows for adjustable output voltage.
5. VC (Pin 5): This is the output voltage pin where the load is connected. It provides the regulated output voltage.
The LM2676SX-ADJ is capable of delivering up to 3A of output current and is designed for high-efficiency step-down voltage conversion in power management applications.
1. VIN (Pin 1): This is the input voltage pin where the device receives the supply voltage, which can range between 8V to 40V.
2. SW (Pin 2): This is the switch pin, connected to the internal power MOSFET. It is used for switching the voltage to the output.
3. GND (Pin 3): This pin is the ground return path for the device.
4. FB (Pin 4): The feedback pin is used to set the output voltage by connecting a resistor divider from the output to ground. This allows for adjustable output voltage.
5. VC (Pin 5): This is the output voltage pin where the load is connected. It provides the regulated output voltage.
The LM2676SX-ADJ is capable of delivering up to 3A of output current and is designed for high-efficiency step-down voltage conversion in power management applications.
Manufacturer
The LM2676SX-ADJ is manufactured by Texas Instruments, a global semiconductor company. Texas Instruments designs and manufactures a wide range of electronic components, including integrated circuits, which are used in various applications such as consumer electronics, automotive systems, industrial equipment, and communication technologies. The company is known for its innovation in analog and embedded processing products.
Application
The LM2676SX-ADJ is a step-down voltage regulator, commonly used in applications requiring efficient power conversion. Key areas include power supplies for industrial and consumer electronics, battery-powered devices, distributed power systems, LED drivers, and automotive electronics. Its ability to deliver up to 3A with adjustable output makes it suitable for scenarios where precise voltage regulation is crucial.
Equivalent
The LM2676SX-ADJ is a high-efficiency, step-down voltage regulator. Equivalent products include:
1. LM2676T-ADJ - Same series, different package.
2. LM2576-ADJ - Similar functionality, lower current.
3. LM2596-ADJ - Comparable step-down regulator with slight differences in efficiency and features.
4. MC34063A - General-purpose step-down, up, or inverting converter.
5. TPS54331 - Similar function, with additional features like soft-start.
These alternatives differ in efficiency, current rating, and additional features, so ensure compatibility with your application requirements.
1. LM2676T-ADJ - Same series, different package.
2. LM2576-ADJ - Similar functionality, lower current.
3. LM2596-ADJ - Comparable step-down regulator with slight differences in efficiency and features.
4. MC34063A - General-purpose step-down, up, or inverting converter.
5. TPS54331 - Similar function, with additional features like soft-start.
These alternatives differ in efficiency, current rating, and additional features, so ensure compatibility with your application requirements.
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