Overview
The LM2672M-12/NOPB is a high-efficiency step-down (buck) switching regulator manufactured by Texas Instruments. This device is part of the SIMPLE SWITCHER® series and is designed to provide a stable output voltage from a wide range of input voltages. The LM2672M-12/NOPB is available in an 8-pin SOIC package and is capable of driving a 1-A load current with excellent line and load regulation.
This regulator is known for its simplicity, requiring only a minimum number of external components, and includes features such as internal frequency compensation, fixed frequency oscillator, external shutdown, soft-start, and frequency synchronization. Its high efficiency (>90%) makes it suitable for applications where heat dissipation is a concern, as it often requires only the copper traces on the PCB for heat sinking.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage (Min) | 6.5 V |
| Input Voltage (Max) | 40 V |
| Output Voltage (Min) | 1.23 V |
| Output Voltage (Max) | 37 V (for adjustable versions), 12 V (for this specific model) |
| Maximum Continuous Drain Current | 1 A |
| Quiescent Current (Typ) | 2.5 mA |
| Switching Frequency (Min) | 225 kHz |
| Switching Frequency (Max) | 400 kHz |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | SOIC (D)-8 |
| Duty Cycle (Max) | 95% |
| Control Mode | Voltage Mode |
| Special Features | Enable, Over Current Protection, Soft-Start, Frequency Synchronization, Thermal Shutdown |
Key Features
- High Efficiency: Greater than 90% efficiency, reducing the need for extensive heat sinking.
- Simple to Use: Requires only 5 external components.
- Fixed Frequency Oscillator: Operates at a fixed frequency, allowing for smaller filter components.
- External Shutdown: TTL-compatible shutdown capability.
- Soft-Start and Frequency Synchronization: Reduces inrush current and allows for synchronization with external clocks.
- Thermal Shutdown and Current Limit Protection: Protects the device from overheating and overcurrent conditions.
- Low Power Standby Mode: Reduces power consumption when the device is in standby.
Applications
- Power Supplies: Ideal for building efficient power supplies that require a stable output voltage from a variable input voltage.
- Embedded Systems: Suitable for use in embedded systems where space and power efficiency are critical.
- Industrial Control Systems: Used in industrial control systems that require reliable and efficient power regulation.
- Consumer Electronics: Found in various consumer electronics where compact and efficient power conversion is necessary.
- Automotive Systems: Can be used in automotive systems due to its wide operating temperature range and robust protection features.
Q & A
- What is the input voltage range for the LM2672M-12/NOPB?
The input voltage range is from 6.5 V to 40 V.
- What is the output voltage of the LM2672M-12/NOPB?
The output voltage for this specific model is fixed at 12 V.
- What is the maximum continuous drain current of the LM2672M-12/NOPB?
The maximum continuous drain current is 1 A.
- What is the typical quiescent current of the LM2672M-12/NOPB?
The typical quiescent current is 2.5 mA.
- What is the switching frequency range of the LM2672M-12/NOPB?
The switching frequency range is from 225 kHz to 400 kHz.
- What are the special features of the LM2672M-12/NOPB?
The device includes features such as enable, over current protection, soft-start, frequency synchronization, and thermal shutdown.
- What is the operating temperature range of the LM2672M-12/NOPB?
The operating temperature range is from -40°C to 125°C.
- What package type is the LM2672M-12/NOPB available in?
The device is available in an 8-pin SOIC package.
- How many external components are required for the LM2672M-12/NOPB?
Only 5 external components are required.
- What is the efficiency of the LM2672M-12/NOPB?
The efficiency is greater than 90%.
