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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VPA2000 датащи(PDF) 1 Page - Renesas Technology Corp |
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VPA2000 датащи(HTML) 1 Page - Renesas Technology Corp |
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1 / 25 page  TFT-LCD Power Supply with VCOM Amplifier Product Data VPA2000 1 Features 2A high efficiency boost regulator with integrated switch for AVDD 1.2V low-power regulator for DisplayPort TCON 2.5V, 300mA LDO for DisplayPort TCON Built-in high speed VCOM buffer External 2x charge pump for VGH Negative regulator for VGL Over-current, over-voltage, and over-temperature protection Built-in soft start Reset output for DisplayPort TCON QFN-24, 4x4mm, Pb-free (RoHS compliant) package Applications DisplayPort devices TFT-LCD display panels for notebooks TFT-LCD display panels for monitors Description The VPA2000 is a 6-output power management IC for TFT-LCD panels. It is integrated into a 24 lead 4x4mm QFN package to provide a small-footprint, low- temperature, and low-cost solution. The current mode control dc-dc step-up switching regulator (boost) is designed to deliver the AVDD source driver voltage with high efficiency. The 1.2MHz switching frequency allows for a small external inductor to meet PCB area and height requirements. The negative gate drive voltage (VGL) is regulated by the on-board linear regulator. A built-in high speed VCOM buffer provides the voltage to drive the capacitive backplane of the TFT-LCD panel. Both VGL and VCOM output voltages can be adjusted by an external resistor divider. A simple, low-cost, external 2x charge pump supplies the positive gate drive voltage (VGH). The internal 2.5V fixed output LDO and 1.2V fixed output charge pump supply the core voltages for the timing controller (TCON). The 1.2V charge pump dissipates approximately 80% less power than a traditional LDO solution. Block Diagram VON Boost VCOM LDO Vcore VOFF 3.3V 16V / 50mA 8V / 600mA 4V / 100mA 2.5V / 300mA 1.2V / 300mA -5V / 30mA VGH VGL 50mA VON Boost VCOM LDO Vcore VOFF 3.3V 16V / 50mA 8V / 600mA 4V / 100mA 2.5V / 300mA 1.2V / 300mA -5V / 30mA VGH VGL 50mA Figure 1. VPA2000 Block Diagram |
Аналогичный номер детали - VPA2000 |
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Аналогичное описание - VPA2000 |
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