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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 20HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：75V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：2MHz
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-HTSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM3424QMHX/NOPB is an automotive-grade constant current N-channel controller designed for LED lighting applications. It supports multiple converter topologies including Boost, Buck, Flyback, and SEPIC. The device operates with a supply voltage range of 4.5 V to 75 V and delivers up to 5 A output current per channel. It features adjustable switching frequencies from 100 kHz to 2 MHz and supports both analog and PWM dimming methods. The component functions within a junction temperature range of -40°C to +125°C.
Feature Summary
- Automotive qualification ensuring reliability in vehicle environments
- Supports versatile power conversion topologies for flexible design integration
- Integrated thermal foldback protection for enhanced system safety
Applications
- Automotive exterior lighting systems
- Automotive interior illumination modules
- High-power LED driver circuits requiring N-channel control
Procurement Notes
Verify the specific suffix 'Q' confirms automotive grade status against official Texas Instruments documentation. Confirm the 'HX' designation indicates tape-and-reel packaging suitable for automated assembly processes. Ensure compatibility with required operating temperatures and input voltage ranges for the target application environment before finalizing procurement.
Selection Notes
Select this component when designing LED drivers that require automotive certification and support for various DC-DC converter topologies. It is suitable for applications needing high input voltage tolerance up to 75 V and precise constant current regulation. Consider its thermal management requirements given the high current capability and operating temperature range.
Part Context
This part belongs to the LM3424 family of LED controllers manufactured by Texas Instruments. It is the automotive-qualified variant of the standard LM3424 series, distinguished by the 'Q' prefix. The device serves as a core control element for driving LEDs in demanding automotive environments where reliability and wide input voltage ranges are critical.
Replacement Considerations
The LM3424MH/NOPB is a non-automotive equivalent within the same family. Verify if automotive qualification is strictly required; if not, the MH variant may serve as a functional substitute. Check pinout and electrical specifications for direct compatibility.
