Lumissil IS31FL3758: 40x9 Matrix LED driver

Matrix LED driver, designed to meet the growing demand for high-performance, energy-efficient LED display solutions in various applications, including appliance display panels, LCD zonal backlighting, and gaming machines. The IS31FL3758 supports a configurable matrix ranging from 48 channels (48ch) up to a 40×9 matrix, consisting of 48 constant current sinks and 9 gate drivers (SW1-SW9) for external PMOS transistors. This new design allows for improved thermal management by offloading power dissipation to the external PMOS transistors outside the device package, enabling efficient heat dissipation in high-power applications. It supports flexible matrix configurations such as 48ch, 47×1, 46×2, 45×3, down to 40×8 and 40×9, offering designers significant flexibility in LED array layouts.

Key features

• Gate drivers for 9 external PMOS
• Spread Spectrum
• 6 groups delay minimizing the power ripple
• Programmable detection of open/short LED location stored in registers
• Built-in de-ghosting circuit for CS pins
• Reduced inactive LED reverse bias to improve LED reliability

Applications

• White good display panel with high brightness
• Gaming machine
• Human machine interface display (HMI)
• LCD display backlight