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Product Detailed Parameters
- Description：IC LED DRV LIN ANALOG 34MA 40QFN
- Series：-
- Mfr：Lumissil Microsystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：-
- Number of Outputs：18
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：34mA
- Frequency：-
- Dimming：Analog
- Applications：-
- Operating Temperature：-40°C ~ 85°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 IS31FL3732A-QFLS2-TR is a matrix LED driver IC designed for driving up to 144 single LEDs. It operates on an input voltage range of 2.7 V to 5.5 V and supports I2C control interfaces. The device features integrated boost and buck topologies with adjustable output voltage. It provides 16 channels with a maximum output current of 34 mA per channel. Operating frequencies reach 1 MHz, and the unit functions within a temperature range of -40°C to +85°C. The component is housed in a 40-WFQFN exposed pad package.
Feature Summary
- Integrates boost and buck converter topologies for flexible LED power management
- Supports I2C compatible interface for digital control and configuration
- Capable of driving 144 LEDs via a 9x16 matrix configuration
- Includes linear analog dimming capabilities for brightness adjustment
Applications
- Automotive intelligent signaling displays
- Compact battery-powered lighting devices
- High pixel count matrix LED indicators
Procurement Notes
Verify the specific suffix QFLS2-TR against the manufacturer's latest datasheet to confirm package dimensions and tape-and-reel specifications. Ensure the design accounts for the recommended operating temperature range of -40°C to +85°C. Confirm I2C address settings and pinout compatibility with the target PCB layout before finalizing procurement orders.
Selection Notes
Select this component when a compact solution for driving large LED matrices is required without external discrete drivers. The integrated power stages simplify schematic design compared to solutions requiring separate boost converters. Consider the 34 mA output limit per channel when sizing LED arrays. Verify that the system MCU can support the required I2C communication speed for real-time updates.
Part Context
This part belongs to the IS31FL3732 series of LED lighting drivers manufactured by Lumissil Microsystems. It is distinct from the IS31FL3730, which utilizes a different package and channel count. The IS31FL3732A variant specifically denotes the version with the described electrical characteristics and packaging options available through authorized distribution channels.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Lumissil Microsystems directly for qualified alternatives or cross-reference options that match the 40-WFQFN footprint and 144-channel drive capability.
