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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 48VQFN
- Series：LITIX™
- Mfr：Infineon Technologies
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Type：DC DC Controller
- Topology：Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：40V
- Voltage - Output：55V
- Current - Output / Channel：-
- Frequency：200kHz ~ 700kHz
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：48-VFQFN Exposed Pad
- Supplier Device Package：PG-VQFN-48-31
- Grade：Automotive
- Qualification：-
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Overview
The TLD55411QVXUMA1 is a single-channel LED driver IC from Infineon’s LITIX family, designed for automotive applications. It integrates a DC-DC controller supporting both buck and boost topologies with an output voltage capability of up to 55 V. The device operates within a supply voltage range of 4.5 V to 40 V and supports switching frequencies between 200 kHz and 700 kHz. It features analog and PWM dimming capabilities and includes open LED protection. The component is housed in a 48-VFQFN package with an exposed pad and is qualified to AEC-Q100 standards.
Feature Summary
- Integrates DC-DC controller with configurable output current via external resistors
- Supports analog and PWM dimming without requiring a microcontroller
- Includes diagnostic features such as open LED protection
Applications
- Automotive LED lighting systems
- High-side LED driver configurations
- Buck and boost topology LED power stages
Procurement Notes
Verify the obsolete status before procurement, as the part is marked Not Recommended for New Designs (NRND). Confirm availability through authorized distributors, as stock may be limited. Ensure the specific suffix QVXUMA1 matches the required packaging and qualification grades. Cross-reference with the official datasheet update notes regarding product lifecycle changes.
Selection Notes
Select this component for designs requiring a single-channel LED driver with integrated power stage control. It is suitable for applications needing flexible buck or boost operation within automotive temperature ranges. Consider the 48-pin QFN package constraints for PCB layout. Evaluate alternative parts if new design approval is required due to its end-of-life status.
Part Context
This device belongs to the TLD5541 series of intelligent high-side LED drivers. It is part of Infineon's LITIX portfolio, which focuses on smart power solutions for automotive lighting. The TLD55411 variant specifically targets single-output applications, offering a compact solution compared to discrete implementations.
Replacement Considerations
The TLD5190QVXUMA1 is listed as a parameter-equivalent substitute. Verify functional compatibility and pinout alignment before substitution. Note that the original part is not recommended for new designs.
