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PDF AAT1164B Data sheet ( Hoja de datos )
| Número de pieza | AAT1164B | |
| Descripción | TRIPLE-CHANNEL TFT LCD POWER SOLUTION | |
| Fabricantes | Advanced Analog Technology | |
| Logotipo |  |
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Advanced Analog Technology, Inc.
April 2007
AAT1164/AAT1164B/AAT1164C
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
Built in 3A, 0.2Ω Switching NMOS
Positive LDO Driver Up to 28V/5mA
www.DataSheet4U.com
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
GENERAL DESCRIPTION
The AAT1164/AAT1164B/AAT1164C is a triple-channel
TFT LCD power solution that provides a step-up PWM
controller, two high voltage LDO drivers (one for positive
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 high voltage LDO drivers generate two regulated
output voltage (VOUT2 and VOUT3) set by external resistor
dividers. VGH voltage does not activate until DLY voltage
exceeds 1.25V.
The AAT1164/AAT1164B/AAT1164C 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
AAT1164/AAT1164B/AAT1164C 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 24
1 page  
Advanced Analog Technology, Inc.
April 2007
AAT1164/AAT1164B/AAT1164C
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 = 3.3V, VDD1 = 10V.)
Soft Start & Fault Detect
PARAMETER
Channel 1 Soft Start Time
Channel 2 Soft Start Time
www.CDhaatanSnheele3t4SU.ocfotmStart Time
During Fault Protect Trigger Time
IN1 Fault Protection Voltage
IN2 Fault Protection Voltage
IN3 Fault Protection Voltage
SYMBOL
tSS1
tSS2
tSS3
tFP
VF1
VF2
VF3
TEST CONDITION
MIN
1.00
0.40
1.00
TYP
14
14
14
55
1.05
0.45
1.05
MAX
1.10
0.50
1.10
UNIT
ms
ms
ms
ms
V
V
V
Error Amplifier (Channel 1)
PARAMETER
Feedback Voltage
Input Bias Current
SYMBOL
VIN1
IB1
Feedback-Voltage Line Regulation
Transconductance
Voltage Gain
Gm
AV
TEST CONDITION
VIN1 = 1V to1.5V
Level to Produce
VEO = 1.233V
2.6V < VDD < 5.5V
∆I = 5 µA
MIN
1.221
–40
TYP
1.233
0
MAX
1.245
40
UNIT
V
nA
0.05 0.15 %/mV
105
1,500
µS
V/V
N-MOS Switch (Channel 1)
PARAMETER
Current Limit
On-Resistance
Leakage Current
SYMBOL
ILIM
RON
ISWOFF
TEST CONDITION
ISW = 1.0A
VSW = 12V
MIN TYP MAX UNIT
3.0 A
0.2 Ω
0.01 20.00 µA
– 台灣類比科技股份有限公司 –
– Advanced Analog Technology, Inc. –
Version 1.00
Page 5 of 24
5 Page 
Advanced Analog Technology, Inc.
April 2007
AAT1164/AAT1164B/AAT1164C
PIN NO.
QFN-32
26
NAME
OUT3
27 IN2
28 OUT2
29 DLY
30 CTL
31 ADJ
www.DataS3h2eet4U.com VGH
I/O DESCRIPTION
O Positive Charge Pump Output
I Negative Charge Pump Feedback Pin
O Negative Charge Pump Output
I High Voltage Switch Delay Control
I High Voltage Switch Control Pin
O Gate High Voltage Fall Time Setting Pin
O Switching Gate High Voltage for TFT
– 台灣類比科技股份有限公司 –
– Advanced Analog Technology, Inc. –
Version 1.00
Page 11 of 24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet AAT1164B.PDF ] | |
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