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參數資料
| 型號： | AT1731AP |
| 廠商： | Aimtron Technology Corp. |
| 英文描述： | DC-DC Power IC for TFT Panel |
| 中文描述： | DC - DC電源芯片為TFT面板 |
| 文件頁數： | 1/22頁 |
| 文件大?。?/td> | 468K |
| 代理商： | AT1731AP |
AT1731A
Preliminary Product Information
DC-DC Power IC for TFT Panel
Feature
2.6V to 5.5V Supply Voltage Operating Range.
1.2MHz Fixed Switching Frequency.
Current-Mode PWM Step-Up Regulator
Main High-Power Output up to 15V
Typical
±
1% Accuracy
Built-In N-MOS, R
ds(on)
≒
0.25
Ω
(Typ.)
Current-Limit Comparator
Negative Charge-Pump Output Voltage Down
to –30 V.
Positive Charge-Pump Output Voltage Up to
30 V.
Internal Power-On Sequencing , Soft-Start.
Thermal Protection , Short Circuit Protection.
1uA Shutdown Current.
1.5mA Quiescent Current.
16-pin TSSOP Package.
Application
TFT-LCD Notebook Display
TFT-LCD Desktop Monitor Panels.
Car Navigation Systems.
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:
http://www.aimtron.com.tw
2/8/2006 REV:1.1 Email:
service@aimtron.com.tw
1
Description
The AT1731A DC-DC converter supply a compact
and small power supply solution to provide the
regulated voltages required by thin film transistor
(TFT) LCD display. A built-in power sequence
control.
The
main
step-up
DC-DC
high-Frequency 1.2 MHz current-mode PWM
regulator with a built-in 0.25
Ω
N-MOS that allows the
use of ultra-small inductors and ceramic capacitor to
generate an externally set output voltage up to 15V. It
provides fast transient response to pulsed loads while
operating with efficiencies over 85%.
The two built-in charge-pump regulators are used to
generate the TFT gate-on and gate-off supplies and
can adjust gate-on and gate-off output voltage with
external resistive divider between gate-off/on output
voltage and ground.
AT1731A is available in TSSOP- 16 package.
converter
is
a
Block Diagram
Logic Control Block
Negative
Charge-Pump
Block
Positive
Charge-Pump
Block
Main Step-Up
Converter Block
Under-Voltage
Lockout
Soft-
Start
Thermal
Protection
Short-Circuit
Protection
Vin
GND
SCP
LX
PGND
Reference
Voltage
REF
FB
/SHDN
V
DDN
FBN
SWN
V
DDP
FBP
SWP
COMP
SS
Aimtron reserves the right without notice to change this circuitry and specifications.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AT1731AP-GRE | 制造商:AIMTRON 制造商全稱:AIMTRON 功能描述:DC-DC Power IC for TFT Panel |
| AT1739 | 制造商:GMT 制造商全稱:Global Mixed-mode Technology Inc 功能描述:LCD Panel Step-up Converter with Analog Multi Function Outputs |
| AT1739R51U | 制造商:GMT 制造商全稱:Global Mixed-mode Technology Inc 功能描述:LCD Panel Step-up Converter with Analog Multi Function Outputs |
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