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RT9921

Richtek Technology Corporation
Part Number RT9921
Manufacturer Richtek Technology Corporation
Description Integrated Multi-Channel DC-DC Converter
Published Jun 23, 2013
Detailed Description ® RT9921 Integrated Multi-Channel DC/DC Converter for TFT LCD Panels General Description The RT9921 includes a high-pe...
Datasheet PDF File RT9921 PDF File

RT9921
RT9921

Overview
® RT9921 Integrated Multi-Channel DC/DC Converter for TFT LCD Panels General Description The RT9921 includes a high-performance boost regulator, a low dropout linear regulator (LDO), a gate pulse modulator (GPM), a voltage detector, a VCOM buffer (unitygain OPA), and a VGH charge pump controller for activematrix thin-film transistor (TFT) liquid-crystal displays (LCDs).
The boost converter provides the regulated supply voltage for the panel source driver ICs.
The converter is a high switching frequency (640kHz or 1.
2MHz) current-mode regulator with an integrated 16V N-Channel 0.
2Ω MOSFET that allows the use of ultra-small inductors and ceramic capacitors.
It provides fast transient respons...


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