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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 14HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：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：14-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：14-HTSSOP
- Grade：Automotive
- Qualification：-
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Overview
The LM3429MHX/NOPB is an LED lighting driver IC from Texas Instruments, designed for high-performance constant current control. It supports boost, buck, and SEPIC topologies with a single output capable of up to 5 A. The device operates on a supply voltage range of 4.5 V to 75 V and features an adjustable switching frequency between 100 kHz and 2 MHz. It includes analog and PWM dimming capabilities, thermal shutdown protection, and enable/shutdown functions. Packaged in an HTSSOP-14, it functions within a temperature range of -40°C to +125°C.
Feature Summary
- Supports versatile power conversion topologies including boost, buck, and SEPIC configurations for flexible LED drive designs.
- Provides precise constant current regulation with integrated analog and pulse-width modulation dimming controls.
- Features adjustable switching frequency to optimize external component selection and electromagnetic interference performance.
Applications
- General solid-state lighting applications requiring high efficiency and reliable constant current drive.
- Industrial and commercial LED fixtures utilizing boost or buck converter architectures.
- Automotive exterior lighting systems compatible with wide input voltage ranges.
Procurement Notes
Verify the specific suffix 'MHX' indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status through official Texas Instruments documentation. Ensure the design accounts for the HTSSOP-14 thermal requirements given the 5 A output capability. Cross-reference the datasheet for exact pinout and recommended operating conditions before finalizing procurement specifications.
Selection Notes
Select this component when designing LED drivers that require support for multiple converter topologies such as boost, buck, or SEPIC. It is suitable for applications needing wide input voltage operation up to 75 V and high output current capacity. Consider the adjustable frequency feature for optimizing system efficiency and EMI performance. Ensure the application environment stays within the specified -40°C to +125°C operating temperature range.
Part Context
The LM3429 belongs to Texas Instruments' family of LED lighting driver ICs. It is part of the broader portfolio of power management solutions designed for efficient light emission control. This series focuses on providing robust constant current regulation for various LED configurations, supporting both general illumination and specialized lighting needs across industrial and automotive sectors.
Replacement Considerations
Check for LM3429MH/NOPB (tube package) if reel packaging is not required. Verify compatibility with LM3429QMY variants if automotive qualification is needed, noting potential differences in package type and maximum voltage ratings.
