Part Number : RT9921
Function : Integrated Multi-Channel DC-DC Converter
Package : VQFN-24L 4x4 Type
Maker : Richtek Technology
Pinouts : 
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 (unity gain OPA), and a VGH charge pump controller for active matrix thin-film transistor (TFT) liquid-crystal displays (LCDs).
Features
1. 2.5V to 5.5V Input Supply Voltage
2. 640kHz/1.2MHz Current-Mode Boost Regulator
3. Fast Transient Response to Pulsed Load
4. Adjustable Output Voltage (±1%)
5. Built-In 16V, 2A, 0.2Ω N-MOSFET
6. High Efficiency Up to 90%
7. Programmable Soft-Start
8. Over-Current Protection
9. Output Under-Voltage Protection
Datasheet PDF Download :
Others datasheet of same file : RT-9921, RT9921DGQV
