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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 28HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：DC DC Controller
- Topology：-
- Internal Switch(s)：No
- Number of Outputs：4
- Voltage - Supply (Min)：12V
- Voltage - Supply (Max)：95V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：Analog, PWM
- Applications：Lighting
- 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 LM3464AMH/NOPB is a high-voltage LED driver IC from Texas Instruments, designed for automotive and industrial lighting applications. It features four independent constant current outputs capable of driving up to 4A per channel. The device supports both boost and buck topologies with an input voltage range of 12V to 95V. It integrates analog and PWM dimming capabilities alongside thermal foldback protection. Housed in a 28-lead HTSSOP package, it operates within a temperature range of -40°C to +125°C.
Feature Summary
- Supports dynamic headroom control for efficient power management across varying load conditions.
- Integrates dual dimming interfaces allowing for precise analog and pulse-width modulation control.
- Includes built-in thermal foldback protection to maintain safe operating temperatures under overload.
- Provides four independent constant current channels for multi-zone LED string driving.
Applications
- Automotive exterior lighting systems
- High-power LED street lighting fixtures
- Industrial floodlighting arrays
- Adaptive front-lighting systems
Procurement Notes
Verify the specific suffix 'AMH' corresponds to the required temperature grade and package variant. Confirm that the 'NOPB' designation indicates lead-free compliance and RoHS adherence as per the manufacturer's latest documentation. Ensure the ordering information matches the exact pinout and electrical specifications required for the target design before finalizing procurement.
Selection Notes
Select this component when designing circuits requiring high input voltage tolerance up to 95V. It is suitable for applications needing multiple independent LED channels driven by a single controller. Consider the HTSSOP-28 package for thermal dissipation requirements. Evaluate the need for dynamic headroom control to optimize efficiency in boost or buck configurations.
Part Context
This part belongs to the LM3464A series of high-voltage LED drivers. It is distinct from lower voltage counterparts like the LM3404 series. The device is engineered for robust performance in electrically noisy environments typical of automotive and heavy machinery applications.
Replacement Considerations
Direct substitutes may include other LM3464 variants with different package options such as LM3464SQ/NOPB for WQFN packaging. Verify compatibility regarding output current ratings and pin assignments before swapping packages.
