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PDF AAT1101 Data sheet ( Hoja de datos )
| Número de pieza | AAT1101 | |
| Descripción | TRIPLE OUTPUT TFT LCD PWM CONTROLLER | |
| Fabricantes | Advanced Analogic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AAT1101 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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Advanced Analog Technology, Inc.
AAT1101 Series
Details are subject to change without notice
TRIPLE OUTPUT TFT LCD PWM CONTROLLER
Features
www.DataShzeet4UC.coommplete PWM Power Control Circuitry
z Precision Reference: 1.25V±1% (25 o C )
z Low Operating Voltage: 2.5V to 6.5V
z Under-Voltage Lockout Protection
z 5V or 3.3V Selectable Over Voltage
Lockout Protection (AAT1101/A only)
AAT1101/AAT1101A/AAT1101C: 500kHz Fixed
AAT1101B: 50k~1MHz Programmable
z Internal Power Up Sequence Control
z Totem Pole Output
z Output Short Circuit Protection
z Low Dissipation Current: 2.5mA
(f=500kHz, Duty=50%)
Pin Configuration
TOP VIEW
IE2
PRDB
VDD
1
2
3
OUT2
OUT3
4
5
16 SHDN
15 IE3
14 IE1
13 EO 1
12 PRDS
OUT1 6
GND
SCP
7
8
11 CHC
10 OVS (OSC) (NC)
9 VREF
(TSSOP-16 PACKAGE)
General Description
The AAT1101 series provide an integrated
triple-channel pulse width modulation (PWM) solution
for the power supply of LCD displays. These devices
offer system engineers the flexibility to tailor-make the
power supply circuitry for specific applications. Each
channel contains its own error amplifier, PWM
comparator, dead–time control (DTC) and output driver.
The under-voltage protection, over voltage protection,
power sequence control, shutdown control circuit,
oscillator, short circuit protection, and voltage reference
circuits are the common features of the three channels.
The AAT1101 series contain two exclusive boost
circuits at CH1, CH3 and an exclusive buck_boost
circuit at CH2. AAT1101’s Power Up sequence initiates
at CH1 then CH2 and finally CH3. AAT1101A/C’s
Power Up sequence acts in the order of CH2, CH3, and
then CH1. AAT1101B’s Power Up sequence starts
from CH2, CH1, and then CH3. At the completion of
the Power Up sequencing, the SCP pin stays low and
enters the Wait State of short circuit protection. Power
Up sequencing delay and short circuit protection delay
are set by connecting a capacitor to the SCP pin.
Furthermore, these devices can operate with supply
voltage ranging from 2.5V to 6.5V and function
efficiently in an environment with low power supply.
With a minimum number of external components, the
AAT1101 series offer a simple and cost effective
solution for TFT LCD.
––
– Advanced Analog Technology, Inc. –
Page 1 of 23
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1 page  
Advanced Analog Technology, Inc.
AAT1101 Series
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (Cont.)
Under Voltage (UV) and Over Voltage (OV) Protection
Parameter
Test Condition
Min Typ Max Unit
UV Upper Threshold
www.DataSheet4VUo.clotmage
VUPH
TC = 25 oC, AAT1101/A/B
TC = 25 oC, AAT1101C
2.1
2.0
2.3 2.5 V
2.2 2.4 V
UV Lower Threshold
Voltage
VUPL
TC = 25 oC, AAT1101/A/B
TC = 25 oC, AAT1101C
1.9 2.1 2.3 V
1.7 1.87 2.05 V
UV Hysteresis ( VUPH – VUPL )
VHYS
TC = 25 oC, AAT1101/A/B
TC = 25 oC, AAT1101C
0.1 0.2 0.3 V
0.18 0.33 0.48 V
OV 3.3V Threshold
Voltage**
VOP33 TC = 25 oC
3.8 4.1 4.4 V
OV 5V Threshold
Voltage**
VOP5
TC = 25 oC, OVS connects a
56 kΩ resistor to VDD
5.7
6.1 6.5 V
**: AAT1101/AAT1101A only
Shutdown Control
Parameter
Test Condition
Min Typ Max Unit
Shutdown Release Input Voltage
Shutdown Enable Input Voltage
2.0 -
-V
- - 0.5 V
Short Circuit Protection Control
Parameter
Test Condition
Input Threshold Voltage
Vr1 CH1 (EO1)
Vr1 CH3 (IE3)
Latch Reset Voltage by VDD
Latch Reset Voltage by
SHDN
Vr 2
VR _ VDD
VR _ SHDN
CH2 (IE2)
TC = 25 oC
TC = 25 oC
Short-Circuit Detection
Threshold Voltage
Vr3
SCP Terminal Source
Current
ISCP
Min Typ Max Unit
1.10 1.15 1.20 V
1.20 1.25 1.30 V
0.67 0.70 0.73 V
0.8 1.5 1.8 V
- - 0.5 V
1.20 1.25 1.30 V
− 2.6 − 2.0 −1.4 µA
––
– Advanced Analog Technology, Inc. –
Page 5 of 23
V 1.0
5 Page 
Advanced Analog Technology, Inc.
Block Diagram
AAT1101B Only
AAT1101 Series
EO1
www.DataSheet4U.coI Em1
V ref = 1.2 5V
EA1
V dtc1=0.9V
IE 2
Vr4 = 0 .7V
EA2
IE 3
Vref = 1.2 5V
EA3
EO2
V dtc2= 0.5V
E O 3 V dtc3=0.9V
V REF
V REF
V ref
OSC
CHC
SDC
UVC
PW M C1
PW M C2
PW M C3
OSC
UVC
PRDB
UVPR
PRDS
VD D
4µA
UVC
EO1
V r1 = 1.1 5V
EO3
V P R T H = 1.2 8V
EO2
V r 2 = 0.2 5V
E N 13
L atch
EN2
L atch
EN13
L atch
OUT1
OUT2
OUT3
UVLO
SDC
EN1 EN2 EN3
UVCN
L atch
SCP&
Seq C trl
VDD
UVPR
V DD
GND
2µA
V r3 = 1.2 5V
SCP
SDC
UVCN
SHDN
SH D N
––
– Advanced Analog Technology, Inc. –
Page 11 of 23
V 1.0
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet AAT1101.PDF ] | |
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