HV98101T-E/CH Integrated Circuits (ICs)

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LED Driver Application and Working Principle of HV98101T-E/CH

The HV98101T-E/CH is an LED driver from NXP Semiconductor to power up to 5 channels of LEDs in series. It combines high-precision current regulation and charge-pump boost functions to drive extra-bright LEDs used for LCD backlight applications. This LED driver has been categorized under the PMIC - LED Drivers section, further details about its application and the working principle are given below.

Application

The HV98101T-E/CH LED driver supports up to 5 channels of LEDs in series, with a maximum drive current up to 20 mA. It is ideal for applications where LCD backlighting require improved efficiency and/or increased brightness such as smartphones, tablets, digital signage and industrial designs. This LED driver provides high efficiency, low audible noise and low electromagnetic interference that make it applicable for even the toughest engineering design environments.

Working Principle

The HV98101T-E/CH LED driver utilizes a boost converter and precision current-regulation circuits to deliver maximum efficiency while driving LEDs. It has a wide input voltage range of 4.5V to 28V, making it possible to power a wide variety of LED strings with various operating voltages. The smart boost controller regulates the LED current from 0 mA up to 20 mA, and the high-power efficiency helps to reduce heat and improve system reliability. The device is also protected against over-current, short-circuits and overload conditions.

The HV98101T-E/CH LED driver provides a smart programmable current-sinking architecture to automatically handle various LED pressure gradings. It has an adjustable soft-start current feature to prevent accidental damage from inrush current. The device also has an automatic Pulse-Width Modulation frequency control to minimize audible noise, while maintaining high-efficiency performance. The HV98101T-E/CH supports full display dimming control, providing maximum flexibility for end-users.

Conclusion

The HV98101T-E/CH is an efficient and reliable LED driver from NXP Semiconductor. It provides high-precision current regulation and charge-pump boost functions to drive extra-bright LEDs. With a wide input voltage range of 4.5V to 28V, the HV98101T-E/CH can power up to 5 channels of LEDs in series, even for the most complex applications. The device\'s advanced features such as built-in over-current, short-circuit and overload protections, adjustable soft-start current and an automatic Pulse-Width Modulation frequency control all combine to make the HV98101T-E/CH an ideal LED driver for many applications.

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