AAT1168A Datasheet PDF - Advanced Analog Technology
| Part Number | AAT1168A | |
| Description | TRIPLE-CHANNEL TFT LCD POWER SOLUTION | |
| Manufacturers | Advanced Analog Technology | |
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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, 0.2Ω Switching 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
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Advanced Analog Technology, Inc.
May 2008
AAT1168/1168A/1168B
ELECTRICAL CHARACTERISTICS
( VDD = 2.6V to 5.5V, TC = –40 ° C to 85 ° C , unless otherwise specified. Typical values are tested at 25 ° C ambient
temperature, VDD = 5V, VDD1 = 10V.)
Soft Start & Fault Detect
PARAMETER
Channel 1 Soft Start Time
Channel 2 Soft Start Time
www.CDahtaanSnheeel t34US.cooftmStart Time
Channel 1 to Channel 2 Delay
SYMBOL
t SS1
t SS2
t SS3
tD12
TEST CONDITION
AAT1168A Only
MIN TYP MAX UNIT
14 ms
14 ms
14 ms
7 ms
Channel 2 to Channel 3 Delay
tD23
During Fault Protect Trigger Time
tFP
IN1 Fault Protection Voltage
IN2 Fault Protection Voltage
IN3 Fault Protection Voltage
VF1
VF2
VF3
AAT1168A Only
AAT1168/AAT1168B
AAT1168A
AAT1168/AAT1168B
AAT1168A
7 ms
55 ms
165 ms
1.00 1.05 1.10 V
1.13 1.17 1.20 V
0.40 0.45 0.50 V
1.00 1.05 1.10 V
Error Amplifier (Channel 1)
PARAMETER
Feedback Voltage
Input Bias Current
SYMBOL
VIN1
IB1
Feedback-Voltage Line Regulation
VRI1
Transconductance
Voltage Gain
Gm
AV
TEST CONDITION
VIN1= 1V to 1.5V
Level to Produce
VEO = 1.233V
2.6V < VDD < 5.5V
∆I = 5 µ A
MIN
1.221
–40
TYP
1.233
0
MAX
1.245
40
UNIT
V
nA
0.05 0.15 %/V
105
1,500
µS
V/V
– 台灣類比科技股份有限公司 –
– Advanced Analog Technology, Inc. –
Version 1.00
Page 5 of 22
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for AAT1168A electronic component. |
| Information | Total 22 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ AAT1168A.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| AAT1168 | The function is TRIPLE-CHANNEL TFT LCD POWER SOLUTION. Advanced Analog Technology | |
| AAT1168A | The function is TRIPLE-CHANNEL TFT LCD POWER SOLUTION. Advanced Analog Technology | |
| AAT1168B | The function is TRIPLE-CHANNEL TFT LCD POWER SOLUTION. Advanced Analog Technology | |
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