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Product Detailed Parameters
- Description：IC LED DRVR LIN PWM 39.6MA 48QFN
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：Yes
- Number of Outputs：24
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：28V
- Voltage - Output：-
- Current - Output / Channel：39.6mA
- Frequency：-
- Dimming：PWM
- Applications：General Purpose
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：48-WFQFN Exposed Pad
- Supplier Device Package：48-QFN (6x6)
- Grade：-
- Qualification：-
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Overview
The IS31FL3748-QFLS4-TR is a linear LED driver IC manufactured by Lumissil Microsystems, designed for matrix LED applications. It features 24 constant current output channels with a per-channel output current of 39.6mA. The device supports PWM dimming and operates within a supply voltage range of 4.5V to 28V. It is housed in a 48-WFQFN package with exposed pad, measuring 6mm x 6mm. The component is rated for an operating temperature range of -40°C to +125°C.
Feature Summary
- Integrates 24 independent constant current channels for driving LED matrices
- Supports PWM dimming control for brightness adjustment
- Linear topology design without internal switching elements
Applications
- Matrix LED display drivers
- Automotive intelligent signaling displays
- General-purpose LED lighting systems
Procurement Notes
Verify the specific suffix QFLS4-TR against the manufacturer's latest datasheet to confirm pinout and packaging specifications. Ensure the design accommodates the 48-WFQFN thermal requirements given the exposed pad configuration. Confirm that the 28V maximum supply voltage aligns with the system power architecture before finalizing procurement.
Selection Notes
Select this component when a high channel count linear driver is required for matrix configurations. The 39.6mA output current suits standard indicator or low-power display LEDs. Consider the 4.5V minimum supply voltage constraint relative to the available power rail. The wide operating temperature range makes it suitable for automotive environments where thermal stability is critical.
Part Context
This part belongs to the IS31FL3748 family of LED drivers from Lumissil Microsystems. It is specifically engineered for applications requiring multiple synchronized outputs in a compact form factor. The QFN-48 package allows for efficient heat dissipation through the exposed thermal pad, supporting reliable operation in dense PCB layouts.
Replacement Considerations
The IS31FL3748A-QFLS4-TR is a related variant within the same product family. Verify if the 'A' suffix denotes any specific electrical or mechanical differences compared to the base model before substitution.
