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AAT1168 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1168
기능 TRIPLE-CHANNEL TFT LCD POWER SOLUTION
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AAT1168 데이터시트, 핀배열, 회로
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




AAT1168 pdf, 반도체, 판매, 대치품
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.)
PARAMETER
VDD Input Voltage Range
VDD1 Input Voltage Range
www.DataSheet4U.com
VDD Under Voltage Lockout
VDD Operating Current
VDD1 Operating Current
Thermal Shutdown
SYMBOL
TEST CONDITION
MIN TYP MAX UNIT
VDD 2.6 5.5 V
VDD1
AAT1168/AAT1168B
AAT1168A
8
8
14 V
23 V
VUVLO
Falling
Rising
2.1 2.2 2.3 V
2.3 2.4 2.5 V
IVDD
IVDD1
VIN1= 1.5V, Not Switching
VIN1= 1.0V, Switching
VVI1+ ~ VVI5+ = 4V
0.56
5.60
7
0.80
10.0
10
mA
mA
mA
TSHDN
160 C
Reference Voltage
PARAMETER
Reference Voltage
Line Regulation
Load Regulation
Oscillator
PARAMETER
Oscillation Frequency
Maximum Duty Cycle
SYMBOL
VREF
VRI
VRO
TEST CONDITION
IVREF = 100µA
IVREF = 100µA,
VDD = 2.6V~5.5V
IVREF = 0~100 µ A
MIN TYP MAX UNIT
1.231 1.250 1.269 V
- 2 5 mV
- 1 5 mV
SYMBOL
fOSC
DMAX
TEST CONDITION
MIN
1.05
84
TYP
1.20
87
MAX
1.35
90
UNIT
MHz
%
台灣類比科技股份有限公司
Advanced Analog Technology, Inc.
Version 1.00
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AAT1168 전자부품, 판매, 대치품
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.)
High Voltage Switch Controller
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
DLY Source Current
IDLY
4 5 6 µ A
DLY Threshold Voltage
VDLY
1.22 1.25 1.28 V
www.DDaLtYaSDheisecth4Ua.rcgoemRON
CTL Input Low Voltage
RDLY
VIL
8
0.5 V
CTL Input High Voltage
VIH
2V
CTL Input Bias Current
IB4 VCTL = 0 to VDD
40 0
40 nA
Propagation Delay CTL to VGH
tPP OUT3 = 25V
100 ns
VOUT3 to VGH Switch R-on
RONSC
VDLY = 1.5V, VCTL = VDD
15 30
ADJ to VGH Switch R-on
RONDC
VDLY = 1.5V, VCTL = GND
30 60
台灣類比科技股份有限公司
Advanced Analog Technology, Inc.
Version 1.00
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