The LT8500EUHH#TRPBF from Linear Technology is a highly integrated Pulse Width Modulation (PWM) generator IC designed for precise control of LED lighting systems, but its versatility allows it to be used in a variety of applications that require PWM signals. This IC is particularly well-suited for RGB or WLED backlighting, as well as general illumination and display backlighting in consumer, industrial, and automotive applications.

Key Features

• 48 Independent PWM Channels: The LT8500 provides a large array of 48 independent channels, each capable of producing a PWM output, allowing for fine-grained control of complex lighting systems or other PWM-driven circuits.
• 12-Bit (4096 Steps) Grayscale PWM Resolution: With 12-bit resolution, the LT8500 ensures smooth and precise brightness control, which is essential for high-quality visual applications.
• Serial Interface: The device includes a serial interface for communication, enabling easy integration with microcontrollers or other digital systems.
• Phase Shifted PWM: The IC allows for phase-shifted PWM, which can help in reducing audible noise and electromagnetic interference (EMI), improving system performance.
• Low EMI Emission: The LT8500 is designed to minimize EMI emissions, a critical feature for applications sensitive to electrical noise.
• Flexible Power Supply: It can operate from a supply voltage ranging from 3V to 5.5V, making it compatible with a wide variety of power sources.

Applications

• LED Backlighting for TVs, Monitors, and Displays
• RGB and WLED Lighting Systems
• Automotive Interior, Dashboard, and Accent Lighting
• General Purpose PWM Applications

The LT8500EUHH#TRPBF is available in a compact 38-lead QFN package, which is RoHS compliant and designed for thermal efficiency. Its robust design ensures reliable operation over a temperature range of -40°C to 105°C, making it suitable for demanding environments. With its combination of features, the LT8500 is a versatile choice for designers looking to implement advanced PWM control in their systems.