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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 10HVSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：75V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：10-HVSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM3409QHVMY/NOPB is a high-voltage PFET buck controller designed for automotive LED lighting applications. It operates within an input voltage range of 6 V to 75 V and supports a maximum output current of 5 A. The device utilizes a buck topology with adjustable switching frequencies between 300 kHz and 1 MHz. It provides precision dimming control and thermal shutdown protection. The component is housed in a 10-lead MSOP-PowerPad package and meets AEC-Q100 qualification standards for automotive use.
Feature Summary
- Supports high-voltage operation up to 75 V for robust automotive power handling
- Enables precise analog and PWM dimming control for LED brightness management
- Includes integrated thermal shutdown to protect against overheating conditions
Applications
- Automotive headlight systems
- LED fog lamp drivers
- High-power automotive LED illumination modules
Procurement Notes
Verify the specific suffix 'HVMY' to confirm the high-voltage variant, as standard LM3409 parts may differ in voltage ratings. Ensure the order includes the '/NOPB' designation to guarantee lead-free packaging compliance. Confirm that the MSOP-PowerPad-10 package matches the target PCB footprint requirements before finalizing procurement orders.
Selection Notes
Select this component when designing circuits requiring input voltages exceeding 42 V, as lower variants like the standard LM3409 are limited to 42 V. Consider the 5 A current capability and adjustable frequency range for optimizing efficiency and thermal performance in high-power LED designs. Verify compatibility with external PFET selection based on the required current and voltage stress levels.
Part Context
This part belongs to the LM3409HV series from Texas Instruments, specifically engineered for high-voltage automotive environments. It serves as a specialized buck controller distinct from lower-voltage counterparts, offering enhanced input tolerance. The device integrates essential protections and control features necessary for reliable LED driving in demanding automotive electrical systems.
Replacement Considerations
LM3409QMY/NOPB is not a direct substitute due to its 42 V limit. For higher voltage requirements, verify availability of other HV-series controllers. Cross-reference pinouts and thermal pad configurations to ensure mechanical compatibility during replacement or design updates.
