Description

The RT9919GQW is an electronic component in the IC Chips product category. It is a high-performance boost regulator designed for thin-film transistor (TFT) liquid-crystal displays (LCDs). This component includes a boost regulator, a low dropout linear regulator (LDO), a gate pulse modulator (GPM), a voltage detector, a VCOM buffer, and a VGH charge pump controller.

Specifications and features

- Input Supply Voltage: 2.5V to 5.5V
- Boost Regulator: 640kHz/1.2MHz Current-Mode
- Fast Transient Response to Pulsed Load
- Adjustable Output Voltage (±1%)
- Built-In 16V, 2A, 0.2Ω N-MOSFET
- High Efficiency Up to 90%
- Programmable Soft-Start
- Over-Current Protection
- Output Under-Voltage Protection
- Low Dropout Voltage Linear Regulator
- Adjustable Output Voltage: 1.5V to VIN − 0.5V (±1.5%)
- Maximum Output Current: 350mA
- On-Chip GPM Controller with Adjustable Falling Time and Power-On Delay
- Flicker Compensator
- Power-On Sequence Control
- Low Voltage Detector with Programmable Detecting Voltage and Delay Time
- Unity-Gain Operation Amplifier for VCOM Buffer
- Charge Pump for VGH regulation
- Over-Temperature Protection
- Thin 24 Lead VQFN Package
- RoHS Compliant and 100% Lead (Pb)-Free

Application Scenarios

This electronic component is specifically designed for use in active matrix TFT LCDs. It provides regulated supply voltage for the panel source driver ICs, making it suitable for applications in thin-film transistor (TFT) liquid-crystal displays (LCDs).

Comparison

- Fast transient response to pulsed loading
- High efficiency with over 90% efficiency
- Programmable soft-start for controlled power-on sequence
- Built-in over-current protection and output under-voltage protection for added safety
- Adjustable output voltage for flexibility
- Low dropout voltage linear regulator with maximum output current of 350mA
- Unity-gain operation amplifier for VCOM buffer with high short-circuit current, fast slew rate, wide bandwidth, and rail-to-rail inputs and outputs
- Charge pump for VGH regulation with regulated TFT Gate-On voltage
- Thin 24 Lead VQFN package for space-saving design
- RoHS compliant and 100% Lead (Pb)-Free for environmental friendliness

- None identified