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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 28HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 LM3464AMHX/NOPB is a high-voltage LED driver IC from the LM3464A series, manufactured by Texas Instruments. It features a boost and buck topology with four independent outputs capable of delivering up to 4 A each. The device operates on an input voltage range of 12 V to 95 V, supporting adjustable output voltages. It supports both analog and PWM dimming methods and includes thermal foldback protection. Packaged in an HTSSOP-28, it functions within a temperature range of -40°C to +125°C.
Feature Summary
- Supports dynamic headroom control for efficient power management across multiple LED channels
- Integrates thermal foldback protection to maintain safe operating temperatures under varying loads
- Enables precise brightness control through combined analog and pulse-width modulation dimming capabilities
Applications
- High-power LED lighting systems requiring multi-channel current regulation
- Automotive exterior lighting applications utilizing wide input voltage ranges
- Industrial LED fixtures needing robust thermal management and high voltage tolerance
Procurement Notes
Verify the specific suffix 'H' indicates tape and reel packaging versus tube variants when sourcing. Confirm RoHS compliance status as indicated by the NOPB designation. Ensure the HTSSOP-28 package matches your PCB footprint requirements. Cross-reference the exact part number against official Texas Instruments documentation to confirm availability and revision levels before finalizing procurement decisions.
Selection Notes
Select this component for designs requiring high input voltage tolerance up to 95 V. Consider the four-output architecture for applications needing independent channel control. Evaluate the HTSSOP-28 package size against available board space. Verify that the required dimming method aligns with either analog or PWM signal inputs provided by the system controller.
Part Context
This part belongs to the LM3464A family of LED drivers designed for high-voltage applications. It differs from lower voltage counterparts like the LM3406 series by supporting significantly higher input potentials. The device integrates multiple constant current sinks into a single solution, reducing component count compared to discrete implementations for multi-zone LED arrays.
Replacement Considerations
Check for direct pin-compatible alternatives within the LM3464 family. Verify if the LM3464AMH/NOPB (tube) serves as a functional equivalent if packaging differences are acceptable. Ensure any substitute maintains the 95 V maximum input rating and four-channel output configuration.
