Overview
The LM3407MYX/NOPB is a 350-mA constant current output floating buck switching converter designed by Texas Instruments. This integrated circuit is specifically tailored for driving high-power LEDs, offering a robust and efficient solution for various lighting applications. The device features an integrated power N-channel MOSFET, which simplifies the application design and reduces the overall component count. It operates within an input voltage range of 4.5V to 30V and can provide an output voltage range from 0.1 VIN to 0.9 VIN. The LM3407MYX/NOPB is packaged in an 8-MSOP (Micro Small Outline Package) with a PowerPAD, enhancing thermal performance and reducing board space requirements.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM3407MYX/NOPB |
| Package Type | 8-MSOP, 8-TSSOP (0.118", 3.00mm Width) Exposed Pad |
| Topology | Step-Down (Buck) |
| Internal Switch(s) | Yes |
| Number of Outputs | 1 |
| Voltage - Supply (Min) | 4.5V |
| Voltage - Supply (Max) | 30V |
| Voltage - Output (Max) | 27V |
| Voltage - Output (Min) | 0.45V |
| Current - Output / Channel | 350mA |
| Frequency | 300kHz ~ 1MHz |
| Dimming | PWM |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Special Features | Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Thermal Shutdown |
Key Features
- Constant Current Output: Provides accurate constant current to high-power LEDs.
- Adjustable Switching Frequency: Can be adjusted from 300 kHz to 1 MHz, allowing for flexibility in design.
- PWM Dimming Control: Supports pulse-width modulation (PWM) for dimming control.
- Integrated Power N-Channel MOSFET: Reduces the need for external components and simplifies the application design.
- Thermal Shutdown Protection: Protects the device from overheating.
- Input Undervoltage Lockout (UVLO): Ensures the device operates within safe voltage ranges.
- Compact Package: MSOP-8 PowerPAD package reduces board space and enhances thermal performance.
Applications
- LED Drivers: Ideal for driving high-power LEDs in various lighting applications.
- Automotive Lighting: Suitable for automotive lighting systems due to its robust and efficient design.
- Industrial Lighting: Used in industrial lighting applications where high reliability and efficiency are required.
- General Illumination: Applicable in general lighting solutions, including residential and commercial lighting.
Q & A
- What is the primary function of the LM3407MYX/NOPB?
The LM3407MYX/NOPB is a constant current output floating buck switching converter designed to drive high-power LEDs.
- What is the input voltage range of the LM3407MYX/NOPB?
The input voltage range is from 4.5V to 30V.
- What is the maximum output current of the LM3407MYX/NOPB?
The maximum output current is 350mA.
- What dimming method does the LM3407MYX/NOPB support?
The device supports pulse-width modulation (PWM) dimming.
- What is the operating temperature range of the LM3407MYX/NOPB?
The operating temperature range is from -40°C to 125°C (TJ).
- What package type is the LM3407MYX/NOPB available in?
The device is packaged in an 8-MSOP (Micro Small Outline Package) with a PowerPAD.
- Does the LM3407MYX/NOPB have built-in thermal protection?
Yes, it features thermal shutdown protection.
- Can the switching frequency of the LM3407MYX/NOPB be adjusted?
Yes, the switching frequency can be adjusted from 300 kHz to 1 MHz.
- What are some common applications of the LM3407MYX/NOPB?
Common applications include LED drivers, automotive lighting, industrial lighting, and general illumination.
- Is the LM3407MYX/NOPB RoHS compliant?
Yes, the device is RoHS compliant.
