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概述
The LP6286 includes a high-efficiency boost regulator, a gate pulse modulator (GPM), a voltage detector, a VCOM buffer, and dual charge pump controller for active matrix TFT LCDs. The converter is a high switching frequency current-mode regulator with an integrated N-Channel 0.2Ω MOSFET that allows the use of small inductors and ceramic capacitors.The OPA can drive the LCD VCOM voltage by Unity-Gain buffer, that features high short-circuit current, fast slew rate and rail-to-rail inputs and outputs. The charge pump controller provides regulated TFT Gate-On voltage. The regulation of the charge pump is generated by the internal comparator that senses the output voltage and compares it with an internal reference. Other features include under-voltage protection, short circuit protection, thermal shutdown protection and under-voltage lockout (UVLO). The LP6286 is available in a space saving QFN-24 (0.5mm pitch) package.
应用
◆TFT LCD Panel
◆TFT LCD Monitor
数据参数
数据参数
输入电压 (V)
2.5~5.5
输出电压(V)
6.0~18
工作频率(Hz)
600K/ 1.2M
限流值(mA)
3000
效率 (%)
92
特点
AVDD, VGH,VGL,VGHM, Vcom OP, Reset
封装
TQFN-24 (4*4)
特征
特征
◆Wide VIN Range: 2.5V to 5.5V
◆1.2MHz Current-Mode Boost Regulator
◆Fast Transient Response to Pulsed Load
◆Adjustable Output Voltage (±1%)
◆Built-In 3A, 0.2Ω N-MOSFET
◆High Efficiency Up to 90%
◆Internal Soft-Start
◆GPM Controller with Adjustable
◆Power-On Delay and Falling Time
◆Adjustable VGHM Delay
◆Low Voltage Detector
◆Programmable Detecting Voltage
◆Open-Drain Reset Output
◆Operation Amplifier for VCOM Buffer
◆VGH and VGL Charge Pump
◆Under-Voltage Protection
◆Over-Temperature Protection
◆Available in QFN-24 (4×4mm)
◆RoHS Compliant and Halogen Free
◆Pb-Free Package
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