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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 14HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- 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：-
- Qualification：-
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Overview
The LM3429MH/NOPB is an LED lighting driver IC from Texas Instruments featuring a single N-channel controller. It supports Boost, Buck, and SEPIC topologies with an output current capability of 5 A. The device operates within a supply voltage range of 4.5 V to 75 V and offers an adjustable output voltage. Switching frequency is programmable between 100 kHz and 2 MHz. It functions reliably across a temperature range of -40°C to +125°C and is housed in an HTSSOP-14 package.
Feature Summary
- Supports multiple converter topologies including Boost, Buck, and SEPIC configurations for flexible LED drive designs.
- Enables precise light control through integrated analog and PWM dimming capabilities.
- Includes thermal shutdown protection to safeguard the component during overheating events.
Applications
- General LED lighting systems requiring constant current regulation
- Industrial illumination applications utilizing Buck or Boost converters
- Automotive lighting circuits compatible with SEPIC topologies
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to ensure compatibility with required packaging and RoHS compliance standards. Confirm that the HTSSOP-14 package variant matches your PCB footprint requirements. Cross-reference the datasheet revision date to validate technical specifications before finalizing procurement orders.
Selection Notes
Select this component when designing circuits requiring high input voltage support up to 75 V. Ensure the application demands a switching frequency adjustable between 100 kHz and 2 MHz to optimize magnetic component size. Verify that the target environment operates within the specified -40°C to +125°C temperature range for reliable performance.
Part Context
This part belongs to the LM3429 series of LED drivers designed for versatile power conversion needs. It integrates control logic for N-channel MOSFETs, allowing efficient management of LED strings in various industrial and commercial settings. The device simplifies design by supporting multiple standard converter architectures within a single integrated circuit.
Replacement Considerations
Consult official substitution guides for equivalent parts within the LM3429 family. Verify pinout compatibility and electrical parameter alignment before replacing existing components in established designs.
