AAT1101 データシートの表示（PDF） - Analog Technology Inc

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AAT1101

TRIPLE OUTPUT TFT LCD PWM CONTROLLER

Analog Technology Inc 

Advanced Analog Technology, Inc.

AAT1101 Series

Details are subject to change without notice

TRIPLE OUTPUT TFT LCD PWM CONTROLLER

Features

z Complete 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 1

PRDB 2

VDD 3

OUT2 4

OUT3 5

16 SHDN

15 IE3

14 IE1

13 EO 1

12 PRDS

OUT1 6

GND 7

SCP 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.

– 台灣類比科技股份有限公司 –

– Advanced Analog Technology, Inc. –

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