Nexperia LCD bias power ICs promise high performance in display devices

9th January 2024
Kristian McCann

Nexperia has recently launched a new series of compact and high-efficiency dual-output LCD bias power supplies, designed to enhance the longevity of thin film transistor liquid crystal display (TFT-LCD) panels. 

These panels are commonly used in a variety of devices such as smartphones, tablets, virtual reality (VR) headsets, and LCD modules.

The series includes the NEX10000, a dual-output LCD bias power supply capable of delivering 80 mA, and the NEX10001, which can provide up to 220 mA of output current. Both models feature I²C programmable asymmetric voltage outputs and require just a single inductor for both outputs, contributing to a reduced bill-of-material and smaller PCB area. To fit the limited space in various applications, the NEX10000/1 are offered in a wafer-level chip-scale package (WLCSP) with 15 bumps, measuring 1.16 × 1.96 × 0.62 mm, smaller than standard wafer-level packages.

Irene Deng, General Manager of the Power and Signal Conversion Business Group at Nexperia, expressed her excitement about the new product: “Launching the LCD bias IC as the initial product in our portfolio is thrilling. It exemplifies Nexperia's commitment to addressing the power needs and compact size requirements of the latest smartphones and other handheld electronic devices. The NEX10000/1 also stand out with their high accuracy output and efficiency, contributing to extended battery and display life.”

In response to the low power needs of TFT-LCD applications that demand prolonged battery life, the NEX10000/1 feature an internal boost converter. This converter operates in continuous conduction mode (CCM) or pulse frequency modulation mode (PFM) depending on the load current, ensuring maximum efficiency. This functionality reduces device current consumption, thereby prolonging the life of single-cell Li-ion, Ni-Li, and Li-polymer batteries. Both devices support an input voltage range of 2.7 V to 5 V and offer exceptional line and load transient responses, minimizing output ripple and contributing to more stable images. This aspect plays a crucial role in extending the operational lifespan of LCD displays.

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