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RT9913A

Richtek
Part Number RT9913A
Manufacturer Richtek
Description Integrated Multi-Channel DC-DC Converter
Published Mar 31, 2015
Detailed Description Preliminary RT9913A/B Integrated Multi-Channel DC-DC Converter for TFT LCD Panels General Description Features The...
Datasheet PDF File RT9913A PDF File

RT9913A
RT9913A

Overview
Preliminary RT9913A/B Integrated Multi-Channel DC-DC Converter for TFT LCD Panels General Description Features The RT9913A/B includes a high-performance boost regulator, one linear-regulator controller for VGL, one low dropout linear regulator, a gate pulse modulator (GPM), a voltage detector and a VCOM Buffer (Unity- gain OPA) for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs).
The boost converter provides the regulated supply voltage for the panel source driver ICs.
With integrated 16V N-Channel 0.
2Ω MOSFET it allows the use of ultra-small inductors and ceramic capacitors and provides fast transient response to pulsed loads.
The VGL linear-regulator controller provides regulated TFTGate-Off .
The low-dropout linear regulator (LDO) using an internal PMOS as the pass device can supply up to 350mA current is suitable for the supply voltage to the T-CON ASIC.
And the GPM is controlled by frame signals from timing controller to modulate the Gate-On voltage.
Voltage detector monitors the supply voltage to issue a reset signal while the detected voltage is too low.
The VCOM Buffer (Unity-gain) high-performance operation amplifier) can drive the LCD backplane (VCOM) and features high short-circuit current (140mA), fast slew rate (12V/μs), wide bandwidth (12MHz) and rail-to-rail input and output.
z 2.
5V to 5.
5V Input Supply Voltage z 640kHz/1.
2MHz (A/B version) Current-Mode Step-Up Boost Regulator Fast Transient Response to Pulsed Load High Accuracy Output Voltage (±2%) Built-In 16V, 2.
0A, 0.
2Ω N-Channel MOSFET High Efficiency Up to 90% Programmable Soft-Start Programmable Over-Current Protection z Linear-Regulator Controller for VGL z Low Drop-Out Voltage Linear Regulator Adjustable Output Voltage (2.
5V to 3.
3V) 350mA Maximum Output Current z On-Chip GPM Controller with Adjustable Falling Time Flicker Compensator Power-On Sequence Control z Low Voltage Detector Programmable Detecting Voltage and Delay Time z Unity-Gain Operation Amplifier f...


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