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Product Detailed Parameters
- Description：IC LED DRIVER RGLTR PWM 3A 8SOP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：38V
- Voltage - Output：-
- Current - Output / Channel：3A
- Frequency：-
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SOP-EP
- Grade：Automotive
- Qualification：-
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Overview
The IS32LT3953B-GRLA3-TR is an automotive-grade LED lighting driver IC featuring a 3.0A dimmable buck switching regulator with spread spectrum technology. It operates within a 4.5V to 40V supply range and delivers up to 3.0A output current. The device utilizes an 8-SOP-EP package (5.0mm x 6.0mm) and supports PWM dimming. Certified to AEC-Q100 standards, it functions across a temperature range of -40°C to +125°C.
Feature Summary
- Integrated 3.0A buck switching regulator with spread spectrum for EMI reduction
- Automotive-grade reliability certified to AEC-Q100 standards
- Supports PWM dimming control for precise brightness regulation
Applications
- Automotive exterior lighting systems
- High-power LED headlamp modules
- Commercial and industrial LED illumination
Procurement Notes
Verify the specific suffix GRLA3-TR against official Lumissil documentation to confirm package type and tape/reel specifications. Confirm AEC-Q100 certification status and operating temperature range requirements match the target application environment before finalizing procurement decisions.
Selection Notes
Select this component for applications requiring high-current LED driving with integrated power management. Ensure input voltage stays within the 4.5V to 40V limit. Consider thermal dissipation capabilities of the SOP-8-EP package for high-power implementations in confined automotive enclosures.
Part Context
This part belongs to Lumissil's IS32LT series of high-brightness LED drivers designed for demanding environments. It integrates power MOSFETs and control logic into a compact surface-mount package, simplifying design complexity compared to discrete solutions while maintaining robust fault protection mechanisms.
Replacement Considerations
Consult Lumissil official documentation for verified substitute part numbers. Cross-reference pin compatibility, electrical parameters, and package dimensions when evaluating alternative components from other manufacturers.
