Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Topology | Integrated low-side MOSFET buck LED driver |
| Input | 4.5 V to 65 V for HV version |
| LED Current | 350 mA to 1 A adjustable |
| Power | Up to 60 W stated LED-power capability |
| Accuracy | ±3% LED current stated feature |
| Efficiency | Up to 96% stated feature |
| Dimming | PWM plus analog/thermal foldback support |
| Exact Package / Packing | SO PowerPAD (DDA), 8 pins; 2500-piece large tape and reel |
Product Overview
LM3414HVMRX/NOPB integrates the low-side power MOSFET and current-sensing element for a 65 V constant-current buck LED driver. That reduces BOM compared with controller-only LM3409HV and eliminates an external current-sense resistor.
LED current is set from roughly 350 mA to 1 A using a small programming resistor, and the architecture supports PWM plus analog/thermal foldback. The integrated switch simplifies design but places switching loss and heat inside the IC/package.
The HVMRX exact code is the 2500-piece large-reel PowerPAD SO package. It is therefore both the HV 65 V electrical variant and the production-reel order code.
For related devices, see HKEQGOO’s LED Drivers ICs category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | LM3414HVMRX/NOPB |
| Topology | Integrated low-side MOSFET buck LED driver |
| Input | 4.5 V to 65 V for HV version |
| LED Current | 350 mA to 1 A adjustable |
| Power | Up to 60 W stated LED-power capability |
| Accuracy | ±3% LED current stated feature |
| Efficiency | Up to 96% stated feature |
| Dimming | PWM plus analog/thermal foldback support |
| Exact Package / Packing | SO PowerPAD (DDA), 8 pins; 2500-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | L3414 HVMR |
Functional Highlights
Integrated MOSFET/sense path simplifies a 1 A LED channel
Fewer high-current external parts reduce BOM and layout complexity, but the IC’s thermal pad/copper becomes critical to delivering high output power.
No external current-sense resistor removes one accuracy/loss term
Current programming still depends on the IADJ/setting network and internal sensing accuracy; thermal foldback can intentionally reduce LED current at high temperature.
Design Considerations
- Use the PowerPAD/copper layout to keep junction temperature inside limits at high VIN/current.
- Check switching loss and duty cycle for the real LED string; the 60 W headline is not achievable under every thermal/input condition.
- Select PWM frequency/pulse width from the required low-brightness behavior.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists LM3414HVMRX/NOPB as Active / Production; SO PowerPAD (DDA), 8 pins; 2500-piece large tape and reel; Level-3-260C-168 HR; −40°C to +125°C; marking L3414 HVMR.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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