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Product Detailed Parameters
- Description：IC LED DRVR LIN I2C 38MA 36QFN
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：28
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：38mA
- Frequency：-
- Dimming：I2C
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：36-VFQFN Exposed Pad
- Supplier Device Package：36-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The IS31FL3235A-QFLS2-TR is a linear LED driver IC featuring 28 constant current channels with independent PWM control. It operates within a supply voltage range of 2.7V to 5.5V and delivers up to 38mA per channel. The device supports I2C dimming and utilizes boost or buck topologies. Packaged in a 36-VFQFN (4x4mm) exposed pad, it functions between -40°C and +85°C.
Feature Summary
- Provides 28 independent constant current channels for precise LED driving
- Supports I2C interface for digital dimming control
- Integrates internal switches with boost and buck topology capabilities
Applications
- Display backlight systems
- LED lighting applications
Procurement Notes
Verify the specific suffix QFLS2 against the manufacturer's latest datasheet to confirm package dimensions and thermal characteristics. Ensure the design accounts for the exposed pad thermal requirements inherent to the 36-VFQFN form factor. Confirm that the I2C address configuration aligns with system bus constraints before finalizing component selection.
Selection Notes
Select this component when a high channel count is required for uniform backlighting or lighting arrays. The linear regulation suits low-noise environments where switching noise must be minimized. Verify that the 38mA output capability meets the forward current requirements of the target LEDs without exceeding thermal limits under worst-case operating conditions.
Part Context
This part belongs to the IS31FL3235 series of LED drivers from Lumissil Microsystems. It shares architectural similarities with the IS31FL3235 but offers updated specifications such as increased current capacity. It complements other variants like the IS31FL3236A which provides additional channels in a larger package.
Replacement Considerations
The IS31FL3235-QFLS2-TR is a related variant within the same family. Verify pin compatibility and current rating differences before substitution. No direct public substitute part numbers are confirmed.
