LP6286数据手册LPSemi中文资料规格书

描述 Description

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.

特性 Features

· 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

应用 Application

· TFT LCD Panel
· TFT LCD Monitor