AAT1101 Datasheet: TRIPLE OUTPUT TFT LCD PWM CONTROLLER





AAT1101 TRIPLE OUTPUT TFT LCD PWM CONTROLLER Datasheet

Part Number AAT1101
Description TRIPLE OUTPUT TFT LCD PWM CONTROLLER
Manufacture Advanced Analogic Technologies
Total Page 23 Pages
PDF Download Download AAT1101 Datasheet PDF

Features: Advanced Analog Technology, Inc. AAT1101 Series Details are subject to change w ithout notice TRIPLE OUTPUT TFT LCD PW M CONTROLLER Features www.DataSheet4U.c om General Description The AAT1101 ser ies provide an integrated triple-channe l pulse width modulation (PWM) solution for the power supply of LCD displays. These devices offer system engineers th e flexibility to tailor-make the power supply circuitry for specific applicati ons. Each channel contains its own erro r amplifier, PWM comparator, dead–tim e control (DTC) and output driver. The under-voltage protection, over voltage protection, power sequence control, shu tdown control circuit, oscillator, shor t circuit protection, and voltage refer ence circuits are the common features o f the three channels. The AAT1101 serie s contain two exclusive boost circuits at CH1, CH3 and an exclusive buck_boost circuit at CH2. AAT1101’s Power Up s equence initiates at CH1 then CH2 and f inally CH3. AAT1101A/C’s Power Up sequence acts in the order of CH2.

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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.
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