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Product Detailed Parameters
- Description：IC LED DRVR LIN I2C 42MA 40QFN
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：No
- Number of Outputs：8
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：42mA
- Frequency：1MHz
- Dimming：I2C, PWM
- Applications：General Purpose
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：40-WFQFN Exposed Pad
- Supplier Device Package：40-QFN (5x5)
- Grade：-
- Qualification：-
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Overview
The IS31FL3736B-QFLS4-TR is a general-purpose 12x8 LED matrix driver manufactured by Lumissil Microsystems. It features an I2C compatible interface for programming and supports individual auto-breath functions for each LED. The device operates with a 1/12 cycle rate and provides linear dimming capabilities via I2C or PWM signals. Each output channel delivers a maximum current of 42mA. It is housed in a 40-pin QFN package measuring 5.0mm x 5.0mm with an exposed pad, suitable for surface mount applications.
Feature Summary
- Supports 12x8 LED matrix configuration with individual auto-breath function
- Programmable via standard I2C compatible interface
- Enables linear dimming through I2C or PWM control signals
Applications
- General purpose LED matrix displays
- Automotive intelligent signaling displays
- Consumer electronics indicator panels
Procurement Notes
Verify the specific suffix QFLS4 to confirm the tape and reel packaging format and lead-free status. Ensure the I2C address configuration matches the system design requirements. Confirm that the 42mA per channel output current aligns with the connected LED forward current specifications. Check the operating temperature range against the environmental conditions of the target application.
Selection Notes
Select this component when a compact solution for driving a 96-segment LED matrix is required. It is appropriate for designs needing independent brightness control and breathing effects without external microcontroller overhead for scanning. Consider the 40-QFN footprint constraints and the availability of I2C bus lines on the host controller.
Part Context
This part belongs to the IS31FL37xx series of LED drivers from Lumissil Microsystems, which are designed for high-density LED matrix applications. The series typically integrates scanning logic and memory to reduce MCU load. The IS31FL3736B specifically targets 12x8 configurations, offering a balance between channel count and package size for various display needs.
Replacement Considerations
Check the IS31FL3736A datasheet for pin-to-pin compatibility and functional differences. Verify if the IS31FL3737B serves as a higher-channel alternative within the same package family. Confirm electrical parameters such as supply voltage and current limits before substituting.
