Dual Output LCD Bias for Smartphones and Tablets


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The RT4801T is a highly integrated Boost and LDO and inverting charge pump to generate positive and negative output voltage. The output voltages can be adjusted from ±4V to ±6V with 100mV steps by I2C interface protocols. With its input voltage range of 2.5V to 5.5V, the RT4801T is optimized for products powered by single-cell batteries and symmetrical output currents up to 150mA. The RT4801T is available in the WL-CSP-15B 1.31x2.07 (BSC) package.


  • TFT-LCD Smartphones
  • TFT-LCD Tablets
  • General Dual Power Supply Applications
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Dual Output LCD Bias for Smartphones and Tablets2020/01/06
Technical Documents
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Richtek Selection Guide [Oct., 2020]2020/12/28