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Product Detailed Parameters
- Description：IC LED DRVR LIN PWM 38MA 48ETQFP
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：No
- Number of Outputs：36
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：38mA
- Frequency：-
- Dimming：PWM
- Applications：Backlight, Lighting
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：48-TQFP Exposed Pad
- Supplier Device Package：48-eTQFP (7x7)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The IS32FL3236A-TQLA3-TR is a linear LED driver IC featuring 36 constant current channels. It supports PWM dimming with an output current range of 17.5 to 28.5 mA per channel and operates within an input voltage range of 2.7 to 5.5 V. The device is housed in a 48-pin eTQFP package (7x7 mm) with an exposed pad, designed for high-density LED matrix applications requiring precise current control.
Feature Summary
- Integrates 36 independent constant current output channels for uniform LED illumination
- Supports high-resolution PWM dimming for precise brightness control
- Utilizes linear regulation architecture for simplified thermal management
Applications
- LED dot matrix displays
- Nixie tube replacements
- VFD panel emulation
Procurement Notes
Verify the specific suffix 'TQLA3' against official Lumissil documentation to confirm the exact tape-and-reel packaging configuration and pin assignment. Ensure the design accommodates the thermal requirements of the 48-eTQFP package, as linear drivers dissipate significant heat proportional to the voltage drop across the outputs. Confirm availability through authorized distributors given potential supply chain variations.
Selection Notes
Select this component when a high channel count is required without the complexity of switching regulators. The linear topology simplifies PCB layout by eliminating inductors but requires careful attention to power dissipation. Verify that the application's duty cycle and ambient temperature allow for safe operation within the device's thermal limits while maintaining the specified 17.5–28.5 mA output range.
Part Context
This part belongs to the IS32FL32xx series of LED drivers from Lumissil Microsystems, specialized for driving complex display matrices. It shares architectural similarities with other models in the family but is distinguished by its 36-channel capacity and specific eTQFP-48 footprint, targeting applications needing dense channel integration in a compact form factor.
Replacement Considerations
Direct substitutes may include other 36-channel linear LED drivers from Lumissil or competitors offering similar pin counts and current capabilities. Verify compatibility regarding package dimensions, thermal characteristics, and control interface signals before substitution.
