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Product Detailed Parameters
- Description：IC LED DRVR CTRL PWM 90MA 48VQFN
- Series：LITIX™
- Mfr：Infineon Technologies
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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)：55V
- Voltage - Output：2V ~ 55V
- Current - Output / Channel：90mA
- Frequency：200kHz ~ 700kHz
- Dimming：Analog, PWM
- Applications：Lighting
- 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：AEC-Q100
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Overview
The TLD55421QVXUMA1 is a single-channel LED lighting driver IC from Infineon’s LITIX family, designed for automotive applications. It integrates a boost and buck converter topology to drive LEDs with an output current of 90 mA. The device operates within a supply voltage range of 4.5 V to 40 V and supports PWM dimming. It features open LED protection and meets AEC-Q100 qualification standards. The operating temperature range extends from -40°C to +150°C TJ.
Feature Summary
- Integrates boost and buck converter topologies for flexible LED driving configurations
- Supports PWM dimming for precise light control
- Includes open LED protection mechanisms for system reliability
Applications
- Automotive exterior lighting systems
- Interior ambient lighting modules
- General LED illumination in harsh environments
Procurement Notes
Verify the specific suffix 'QV' against official Infineon documentation to confirm package type and tape/reel specifications. Confirm AEC-Q100 qualification status directly from the datasheet. Check for end-of-life or not-recommended-for-new-designations if sourcing for new products. Ensure compatibility with existing PCB footprints and thermal management requirements before procurement.
Selection Notes
Select this component when a single high-current channel with integrated power stage is required. Consider the 90 mA output limit and 40 V supply capability. Evaluate the need for boost/buck flexibility versus simpler linear drivers. Verify that the TSDSO-8 package fits the design constraints. Compare against other LITIX variants if multiple channels or different current ratings are needed.
Part Context
This part belongs to the TLD55xx series of LED drivers from Infineon Technologies. These devices are part of the LITIX portfolio, which focuses on intelligent LED control solutions for automotive markets. The series typically offers integrated protection features and high reliability standards suitable for vehicle electronics.
Replacement Considerations
Check for direct pin-to-pin replacements within the TLD55xx family, such as the TLD55411QVXUMA1, ensuring electrical parameters match. Verify if alternative packages or suffixes offer equivalent functionality. Consult Infineon's official substitution guides for validated alternatives.
