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LM2676S-ADJ
+BOMIC REG BUCK ADJ 3A TO263
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제조업체텍사스 인스트루먼트(주)
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제조업체 부품 #LM2676S-ADJ
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재고7673
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사양
| 속성 | 가치 |
| 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 | Tube |
개요
Description
Key features include a wide input voltage range, typically from 8V to 40V, and an adjustable output voltage range from 1.2V to 37V, which makes it suitable for a wide variety of applications. It also incorporates a fixed, high-frequency switching (260 kHz), leading to smaller external components and a more compact overall design.
Furthermore, the LM2676S-ADJ includes additional features such as thermal shutdown and current limiting to enhance system reliability. Its efficient design and robust performance make it a popular choice for powering microcontrollers, communication devices, and other electronics requiring a stable power source.
Equivalent
1. LM2596-ADJ from Texas Instruments - another popular adjustable voltage regulator.
2. L78S05CV from STMicroelectronics - although fixed, it can be used with additional components for adjustability.
3. MC34063 from ON Semiconductor - a versatile DC-DC converter.
4. LT1074 from Analog Devices - similar functionality with higher efficiency.
Ensure compatibility with your specific requirements before substitution.
Features
1. Adjustable Output Voltage: Allows output voltage customization via external resistors.
2. High Efficiency: Operates at up to 92% efficiency, minimizing heat generation.
3. Current Capability: Delivers up to 3A output current.
4. Wide Input Voltage Range: Supports input voltages from 8V to 40V.
5. Fixed Switching Frequency: Operates at 260 kHz, aiding in smaller external component sizing.
6. Low Shutdown Current: Draws only 50 µA in shutdown mode, conserving energy.
7. Overcurrent Protection: Features in-built overcurrent protection to prevent damage.
8. Thermal Shutdown: Protects the device by shutting down in case of overheating.
9. Soft Start: Reduces inrush current during start-up to protect components.
10. Minimal External Components: Simplifies design with fewer external components required.
These features make the LM2676S-ADJ suitable for applications requiring a reliable, efficient, and adjustable power supply solution.
Pinout
1. Vin (Pin 1): Input voltage pin where the unregulated voltage supply is connected.
2. SW (Pin 2): Switch output that connects to the inductor.
3. Ground (GND, Pin 3): Common ground for input and output.
4. Feedback (FB, Pin 4): Used to adjust the output voltage by connecting it to a resistor divider network.
5. ON/OFF (Pin 5): Enables or disables the regulator. When connected to ground, the device is enabled; when connected to a high voltage, the device is disabled.
The LM2676S-ADJ is specifically designed to provide efficient power conversion with an adjustable output voltage, making it suitable for various power supply applications.
Manufacturer
Application
1. Power Supply Solutions: Used in designing efficient power supplies for various electronic devices requiring adjustable output voltage.
2. Telecommunications: Supports power regulation in telecom equipment.
3. Industrial Automation: Provides stable voltage for industrial control systems.
4. Consumer Electronics: Powers devices like TVs, monitors, and audio equipment.
5. Automotive Systems: Utilized in automotive electronics for power regulation.
6. Embedded Systems: Supports microcontrollers and other components in embedded applications.
Its versatility and efficiency make it suitable for both commercial and industrial applications.
Package
Frequently Asked Questions
Q: What is the input voltage range for the LM2676S-ADJ?
A: The device operates with an input voltage from 8V to 40V, making it suitable for a wide range of power supplies.
Q: Can the output voltage be set to any value?
A: Yes, it is adjustable from a minimum of 1.2V up to a maximum of 37V using external feedback resistors.
Q: What is the maximum output current this regulator can provide?
A: It can deliver a continuous output current of up to 3A, ideal for moderate-load applications.
Q: Does this device require an external synchronous rectifier?
A: No, it does not. The LM2676S-ADJ uses a non-synchronous buck topology, simplifying design.
Q: What is the typical switching frequency of this IC?
A: The switching frequency is fixed at 260 kHz, balancing efficiency and component size.
Q: Is this part recommended for new designs?
A: No, the part status is "Obsolete." Consider newer SIMPLE SWITCHER® alternatives for new projects.
Q: What package options are available for this component?
A: It is offered in a TO-263 (DDPAK-7) surface-mount package, which provides good thermal performance.
