RT9921 - Integrated Multi-Channel DC-DC Converter

Richtek Technology Corporation

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Datasheet Details

Part number	RT9921
Manufacturer	Richtek Technology Corporation
File Size	241.71 KB
Description	Integrated Multi-Channel DC-DC Converter
Datasheet	RT9921_RichtekTechnologyCorporation.pdf

RT9921 Product details

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).

Features

high short-circuit current (140mA), fast slew rate (12V/μs), wide bandwidth (12MHz) and rail-to-rail inputs and outputs. The VGH charge pump controller provides regulated TFT Gate-On voltage. The regulation of the positive charge pump is generated by the internal comparator that senses the output voltage and compares it with an internal reference. Features.
2.5V to 5.5V Input Supply Voltage.
640kHz/1.2MHz Current-Mode Boost Regulator  Fast Transient Response to Pulsed Load  Adjustab.

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Published: Jun 23, 2013 |