RT9284B-15GJ6E

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The RT9284B-15GJ6E from Richtek is a high-efficiency, high-current LED driver with a single inductor for perfect panel displays, backlights, and headlights. The RT9284B-15GJ6E is optimized for applications such as flat panel displays, used in laptop and TV monitors, amplifier drivers and general-purpose generators, and is designed to provide unprecedented levels of integration and control for applications such as automotive headlights, video displays, and other backlighting applications.

Application Field and Working Principle of the RT9284B-15GJ6E

The RT9284B-15GJ6E PMIC - LED drivers are designed to provide current driving capabilities up to 15A and the highest efficiency with very low ripple. The RT9284B-15GJ6E offers integrated protection, multi-mode compensation, integrated synchronous rectifiers, programmable frequency, and high/low side-by-side dimming control with separate I2C signaling.

This LED driver integrates a high-efficiency buck converter, a synchronous rectifier controller, a power MOSFET, and a charge-pump regulator for ultra-low dropout voltage. It is designed to provide high accuracy and low noise dimming support. The device is also employed in the application of LCD monitor panels and small form factor displays.

When static dimming is required, the RT9284B-15GJ6E offers a wide range of dimming settings from a wide range of 0.1% to 100%. A significant advantage of the RT9284B-15GJ6E is its ability to work with both 1-bit and 2-bit PWM dimming settings, so that both analog and digital dimming are possible. The RT9284B-15GJ6E also provides programmable switching frequency settings and adaptive frequency settings at +/- 5kHz, to minimize EMI noise.

In terms of protection and control, the RT9284B-15GJ6E has separate high-side and low-side shutdown functions, as well as an under-voltage protection, over-current detection, cycle-by-cycle limit, and thermal shutdown. It is also able to detect both load and temperature faults. And the integrated reset enable and POR gate support will allow a longer system hold-up time. Moreover, the device supports an integrated I2C interface that can be used for monitoring and controlling.

The RT9284B-15GJ6E LED drivers require a minimum input voltage of 4.5V and a maximum of 10V, and can provide output current of up to 15A. The switching frequency can be set to as high as 1MHz, for improved efficiency, and the dimming settings allows for fast response time and short dimming transition time.

Overall, the Richtek RT9284B-15GJ6E PMIC - LED driver is an excellent solution for FPD backlight, LCD monitor panel and other general-purpose LED applications. It provides high efficiency, with low ripple, integrated protection, and adjustable dimming settings. This makes the RT9284B-15GJ6E a good choice for its application field and general-purpose LED applications.

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