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Product Detailed Parameters
- Description：24X4 MATRIX MINI-LED DRIVER IC F
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Constant Current
- Internal Switch(s)：No
- Number of Outputs：24
- Voltage - Supply (Min)：3V, 5.5V
- Voltage - Supply (Max)：5.5V, 16V
- Voltage - Output：20V
- Current - Output / Channel：60mA
- Frequency：-
- Dimming：PWM, SPI
- Applications：Backlight
- 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 IS31FL3749-QFLS4-TR is a linear constant current LED driver IC featuring 24 outputs. It supports PWM dimming via an SPI interface and delivers 60mA per channel. The device operates on a supply voltage range of 2.7V to 5.5V. It is housed in a 48-QFN (6x6mm) package with exposed pad. The component functions within an operating temperature range of -40°C to +125°C.
Feature Summary
- Integrates 24 constant current channels for matrix LED driving
- Supports high-speed SPI communication for control and dimming
- Includes diagnostic capabilities and CRC protection
Applications
- Dot matrix LED displays
- Industrial indicator panels
- Consumer electronic displays
Procurement Notes
Verify the specific suffix QFLS4-TR against the manufacturer's latest datasheet to confirm pinout, packaging, and electrical specifications match design requirements. Confirm RoHS compliance status and check for any recent Product Change Notifications (PCN) that may affect material composition or manufacturing location before finalizing procurement orders.
Selection Notes
Select this component when a high-channel-count LED driver with SPI interface is required. Ensure the host microcontroller supports the necessary SPI clock speeds. Verify that the 60mA output current meets the LED forward current requirements without external heat sinking, considering the thermal resistance of the 48-QFN package under maximum load conditions.
Part Context
This part belongs to the Lumissil IS31FL37xx series of LED lighting drivers designed for industrial and consumer applications. These devices typically feature EMI noise reduction technology and support wide ranges of LED configurations. The series focuses on simplifying MCU overhead through integrated pattern generation and synchronization features.
Replacement Considerations
The IS31FL3742A-QFLS4-TR is listed as a direct substitute. Note that the replacement offers 30 outputs at 38mA compared to the original's 24 outputs at 60mA. Verify that the channel count and current drive capabilities are compatible with the target LED matrix design.
