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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 28HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：DC DC Controller
- Topology：Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：3
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：36V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：1MHz
- Dimming：Analog, PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：28-HTSSOP
- Grade：-
- Qualification：-
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Overview
The LM3431MHX/NOPB is a Texas Instruments LED lighting driver IC featuring three independent constant current channels. It utilizes an HTSSOP-28 package and supports PWM and analog dimming methods. The device operates within a temperature range of -40°C to +125°C and includes features such as adjustable switch frequency, enable/shutdown control, soft start, and thermal shutdown protection.
Feature Summary
- Provides three individually controllable constant current outputs for multi-channel LED applications
- Supports both PWM and analog dimming techniques for flexible brightness control
- Integrates thermal shutdown and soft start functionality for enhanced system reliability
Applications
- Multi-zone automotive interior lighting systems
- High-end automotive exterior headlamp modules
- Commercial architectural LED accent lighting arrays
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and temperature grade specifications. Confirm that the HTSSOP-28 footprint matches your PCB layout requirements. Cross-reference the part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.
Selection Notes
Select this component when designing circuits requiring three separate LED channels with individual current regulation. Ensure the application demands support for both PWM and analog dimming signals. Verify that the operating environment falls within the specified -40°C to +125°C range and that the HTSSOP-28 package size fits the mechanical constraints.
Part Context
This part belongs to the LM3431 series of LED drivers from Texas Instruments. It is designed specifically for high-reliability lighting applications where multiple independent channels are necessary. The device integrates power switching elements and control logic into a single compact package to simplify design complexity.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation.
