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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 14HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：75V
- Voltage - Output：-
- Current - Output / Channel：1.5A
- Frequency：10kHz ~ 1MHz
- Dimming：PWM
- Applications：Lighting
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：14-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：14-HTSSOP
- Grade：Automotive
- Qualification：-
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Overview
The LM3406HVMHX/NOPB is a constant current buck LED driver IC manufactured by Texas Instruments. It operates with an input voltage range of 6 V to 75 V and supports an output current up to 1.5 A. The device features a switching frequency adjustable from 10 kHz to 1 MHz and utilizes a 14-MSOP package. It includes internal power switches and supports PWM dimming for brightness control. The component is rated for operation between -40°C and +125°C junction temperature.
Feature Summary
- Supports high-voltage input ranges up to 75 V for flexible system design
- Provides precise constant current regulation for LED string stability
- Enables digital brightness control via PWM dimming interface
Applications
- Automotive exterior lighting systems
- High-brightness general illumination fixtures
- Industrial LED lighting arrays
Procurement Notes
Verify the specific suffix against official Texas Instruments documentation to confirm pinout and thermal characteristics. Ensure the selected package variant matches the PCB footprint requirements. Cross-reference the datasheet revision history for any recent manufacturing changes or material updates before finalizing procurement orders.
Selection Notes
Select this component when input voltages exceed 42 V, as standard LM3406 variants are limited in that regard. Evaluate the required switching frequency against EMI constraints, as frequencies above 100 kHz may require careful layout. Confirm that the 1.5 A current capability aligns with the target LED string configuration and thermal management strategy.
Part Context
This part belongs to the LM3406 family of non-synchronous buck regulators designed specifically for driving LEDs. It shares functional similarities with the LM3406 but extends the maximum input voltage capability to accommodate higher bus voltages commonly found in automotive and industrial applications.
Replacement Considerations
LM3406HVMSX/NOPB
FAQ
What is the maximum input voltage supported by this IC?
The LM3406HVMHX/NOPB supports a maximum input voltage of 75 V.
Does this device include internal power switches?
Yes, the LM3406HVMHX/NOPB integrates internal high-side and low-side power switches.
