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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：-
- Internal Switch(s)：No
- Number of Outputs：4
- Voltage - Supply (Min)：12V
- Voltage - Supply (Max)：80V
- 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 LM3464MHX/NOPB is a four-channel LED lighting driver IC from Texas Instruments, housed in a 28-pin HTSSOP package. It operates within an input voltage range of 12 V to 95 V and supports output currents up to 6 A per channel. The device features adjustable switching frequencies between 900 kHz and 1.15 MHz, with an operating temperature range spanning -40 °C to +125 °C. It integrates boost and buck topologies for flexible power conversion.
Feature Summary
- Integrates dynamic headroom control to optimize efficiency across varying load conditions.
- Supports both analog and PWM dimming methods for precise brightness regulation.
- Includes thermal foldback and shutdown mechanisms to protect against overheating.
Applications
- High-voltage LED string drivers
- Commercial and industrial LED lighting fixtures
- General-purpose constant current LED applications
Procurement Notes
Verify the specific suffix 'X' indicates reel packaging when ordering. Confirm RoHS compliance status through official manufacturer documentation. Ensure the HTSSOP-28 footprint matches your PCB layout requirements. Cross-reference the datasheet for exact thermal performance metrics under your specific ambient conditions.
Selection Notes
Select this component for high-voltage LED arrays requiring multi-channel control. Consider the 95 V maximum input rating for compatibility with your power supply. Evaluate the 28-pin HTSSOP package size against available board space. Verify that the required switching frequency range aligns with your passive component selection.
Part Context
This part belongs to the LM3464 series of LED drivers. It shares functional similarities with other members like the LM3464MH/NOPB, differing primarily in packaging format. The series is designed for robust LED illumination tasks requiring high voltage tolerance and multiple independent channels.
Replacement Considerations
LM3464MH/NOPB serves as a tube-packaged alternative within the same family. Verify pinout compatibility before substitution. Other LM3464 variants may offer different thermal or electrical characteristics.
