SP7619ER-L/TR

PMIC - LED Drivers

Power management integrated circuit (PMIC) LED drivers are devices used to control the power, dimming effect and color temperature of LED lights. SP7619ER-L/TR is a PMIC LED driver developed by Silicon Power, a leader in power management semiconductor technology. It is designed to support a variety of LED applications, including backlighting and LCD panel lighting.

SP7619ER-L/TR Application

The SP7619ER-L/TR PMIC LED driver offers a constant current output with adjustable current, dimming and temperature control through the use of a 10-bit precision DAC. It is specifically designed for LCD panel lighting applications, such as notebook notebooks, LCD screens, and projection panels. The adjustable current and temperature control ensure a uniform brightness and white balance across LCD panels, while the 10-bit DAC provides linear control over the range of output currents.

SP7619ER-L/TR Working Principle

The SOP-7 package of the SP7619ER-L/TR contains several components, including a Constant Current Bus (CCBC) for power and control, a pulse width modulation (PWM) input for dimming, a 10-bit DAC for adjustable current and temperature, and an output power transistor for current control. The current control is performed by adjusting the voltage across the output FET and then feeding this voltage back to the DAC to adjust the current flowing into the load. An external resistor is used to define the maximum current that can be supplied to the load. The dimming and temperature control is handled by the 10-bit DAC, which is used to create a voltage ramp that is fed into the CCBC. This voltage ramp is used to turn the LED on and off, thereby controlling the brightness and color temperature of the LED.

Conclusion

The SP7619ER-L/TR PMIC LED driver is perfect for applications requiring adjustable current, dimming and temperature control, such as those found in LCD panel lighting applications. Through the use of the 10-bit precision DAC, the SP7619ER-L/TR offers a linear control of output current, allowing for precise and even control of brightness and color temperature across the panel. The PMIC LED driver is also capable of reliable and efficient dimming, as well as accurate temperature control, all of which help to ensure optimal performance and reliability of the LED panel.