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Advanced Analog Technology

AAT1168A Datasheet Preview

AAT1168A Datasheet

TRIPLE-CHANNEL TFT LCD POWER SOLUTION

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Advanced Analog Technology, Inc.
May 2008
AAT1168/1168A/1168B
Product information presented is current as of publication date. Details are subject to change without notice.
TRIPLE-CHANNEL TFT LCD POWER SOLUTION
WITH OPERATIONAL AMPLIFIERS
FEATURES
GENERAL DESCRIPTION
Built in 3A, 0.2Switching NMOS
www.DPaotasSihtieveet4LUD.cOomDriver Up to 28V/5mA
Negative LDO Driver Down to 14V/5mA
1 VCOM and 4 VGAMMA Operational Amplifiers
28V High Voltage Switch for VGH
Internal Soft-Start Function
1.2MHz Fixed Switching Frequency
3 Channels Fault and Thermal Protection
Low Dissipation Current
QFN-32 Package Available
PIN CONFIGURATION
VOUT3 1
VREF 2
GND 3
GND1 4
VO1 5
VI1- 6
VI1+ 7
VO2 8
AAT1168/
AAT1168A/
AAT1168B
24 EO
23 IN1
22 VDD
21 SW
20 VO5
19 VI5-
18 VI5+
17 VO4
The AAT1168/AAT1168A/AAT1168B is a triple-channel
TFT LCD power solution that provides a step-up PWM
controller, two LDO drivers (one for positive high voltage
and one for negative voltage), five operational amplifiers,
and one high voltage switch up to 28V for TFT LCD
display.
The PWM controller consists of an on-chip voltage
reference, oscillator, error amplifier, current sense circuit,
comparator, under-voltage lockout protection and
internal soft-start circuit. The thermal and power fault
protection prevents internal circuit being damaged by
excessive power.
The LDO drivers generate two regulated output voltage
set by external resistor dividers. VGH voltage does not
activate until DLY voltage exceeds 1.25V.
The AAT1168/AAT1168A/AAT1168B contains 4+1
operational amplifiers. VO1, VO2, VO4, and VO5 are for
gamma corrections and VO3 is for VCOM . In the short
circuit condition, operational amplifiers are capable of
sourcing ±100mA current for VGAMMA , and ±200mA
current for VCOM .
With the minimal external components, the
AAT1168/A/B offers a simple and economical solution
for TFT LCD power.
台灣類比科技股份有限公司
Advanced Analog Technology, Inc.
Version 1.00
Page 1 of 22




Advanced Analog Technology

AAT1168A Datasheet Preview

AAT1168A Datasheet

TRIPLE-CHANNEL TFT LCD POWER SOLUTION

No Preview Available !

Advanced Analog Technology, Inc.
May 2008
ORDERING INFORMATION
DEVICE
TYPE
PART
NUMBER
PACKAGE PACKING
AAT1168
AAT1168 Q5:VQFN32- T: Tape
-Q5-T
5*5 and Reel
AAT1168A
AAT1168A
-Q5-T
Q5:VQFN32-
5*5
www.DataSheet4U.com
AAT1168B
AAT1168B
-Q5-T
Q5:VQFN32-
5*5
T: Tape
and Reel
T: Tape
and Reel
NOTE: The product is lead free and halogen free.
AAT1168/1168A/1168B
TEMP.
RANGE
40 ° C to + 85 ° C
40 ° C to + 85 ° C
40 ° C to + 85 ° C
MARKING
AAT1168
XXXXX
XXXX
AAT1168A
XXXXX
XXXX
AAT1168B
XXXXX
XXXX
MARKING
DESCRIPTION
Device Type
Lot no.(6~9digits)
Date Code
(4digits)
Device Type
Lot no.(6~9digits)
Date Code
(4Digits)
Device Type
Lot no.(6~9digits)
Date Code
(4Digits)
TYPICAL APPLICATION
台灣類比科技股份有限公司
Advanced Analog Technology, Inc.
Version 1.00
Page 2 of 22


Part Number AAT1168A
Description TRIPLE-CHANNEL TFT LCD POWER SOLUTION
Maker Advanced Analog Technology
Total Page 22 Pages
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3 AAT1168B TRIPLE-CHANNEL TFT LCD POWER SOLUTION
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