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PMIC - LED Drivers

IS31FL3732-QFLS2-TR is a high-performance LED driver with constant current output circuit in a quad flat no-lead package. It is designed to supply constant current to modern LED light sources, providing more uniform brightness and more accurate current regulation, while enhancing user experience and achieving energy-saving goals. With its four-output configuration, the IS31FL3732-QFLS2-TR is the ideal choice for applications such as LED backlighting, LED downlights, LED light fixtures, LCD back lights and a wide range of lighting applications.

Features

The IS31FL3732-QFLS2-TR LED driver provides a host of features:

• Output current accuracy: 1%
• Output voltage accuracy: 0.4%
• High efficiency of up to 99%
• Low external components: 1 resistor
• Programmable external dimming
• Full thermal protection
• Built-in EMI suppressor
• Flat no-lead package
• RoHS-compliant

Applications

The IS31FL3732-QFLS2-TR LED driver is an ideal solution for a wide range of lighting applications such as:

• Automotive lighting applications
• Architectural lighting
• Stage lighting
• Street/path/relative lighting
• Indoor/outdoor lighting
• Backlit displays
• Architectural decorations

Working principle

The IS31FL3732-QFLS2-TR LED driver is an integrated constant current output circuit housed in a quad flat no-lead package. The device is capable of providing excellent linearity as well as high efficiency of up to 99%. The output voltage accuracy is 0.4%, while the required output current accuracy is 1%.

The device is equipped with four independent output channels, each with its own dedicated control input. The current level is determined by the external resistor, which is connected between the VIN and SENSE pins. The CONTROL input pin allows for external dimming capability.

The device also features full thermal protection, as well as a built-in EMI suppressor, ensuring reliable operation and satisfying strict international EMC standards. The IS31FL3732-QFLS2-TR is also RoHS-compliant, making it an excellent choice for a variety of lighting and display applications.

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