vpa2000 Integrated Device Technology, vpa2000 Datasheet

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vpa2000

Manufacturer Part Number
vpa2000
Description
Tft-lcd Power Supply With Vcom Amplifier
Manufacturer
Integrated Device Technology
Datasheet
Preliminary Product Data
Features
Applications
Block Diagram
July 24, 2009
2A high efficiency boost regulator with integrated
switch for AVDD
1.2V low-power regulator for DisplayPort TCON
2.5V, 300mA LDO
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 package
DisplayPort devices
TFT LCD display panels for notebooks
TFT LCD display panels for monitors
3.3V
3.3V
Figure 1. VPA2000 Block Diagram
VCOM
VCOM
Boost
Boost
Vcore
Vcore
VGH
VGH
VOFF
VOFF
VGL
VGL
VON
VON
LDO
LDO
1
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 2.4MHz 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
TFT-LCD Power Supply
with VCOM Amplifier
16V / 50mA
16V / 50mA
8V / 600mA
8V / 600mA
4V / 100mA
4V / 100mA
2.5V / 300mA
2.5V / 300mA
1.2V / 300mA
1.2V / 300mA
-5V / 30mA
-5V / 30mA
© 2009 Integrated Device Technology, Inc.
50mA
50mA
than a traditional LDO
solution.
VPA2000

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vpa2000 Summary of contents

Page 1

... July 24, 2009 TFT-LCD Power Supply Description The VPA2000 is a 6-output power management IC for TFT LCD panels 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 ...

Page 2

... VPA2000 Preliminary Product Data www.IDT.com 6024 Silver Creek Valley Road San Jose, California 95138 Tel: 800-345-7015 DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject to change without notice ...

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