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ADD8754ACPZ-REEL PDF预览

ADD8754ACPZ-REEL

更新时间: 2024-01-10 15:08:43
品牌 Logo 应用领域
亚德诺 - ADI 栅极
页数 文件大小 规格书
28页 524K
描述
LCD Panel Power, VCOM, and Gate Modulation

ADD8754ACPZ-REEL 技术参数

是否Rohs认证: 符合生命周期:Obsolete
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.82
JESD-30 代码:S-PQCC-N24端子数量:24
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:QCCN
封装等效代码:LCC24,.16SQ,20封装形状:SQUARE
封装形式:CHIP CARRIER电源:14 V
认证状态:Not Qualified子类别:Power Management Circuits
最大供电电流 (Isup):3 mA标称供电电压 (Vsup):14 V
表面贴装:YES温度等级:INDUSTRIAL
端子形式:NO LEAD端子节距:0.5 mm
端子位置:QUADBase Number Matches:1

ADD8754ACPZ-REEL 数据手册

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LCD Panel Power, VCOM,  
and  
Gate Modulation  
ADD8754  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Step-up switching regulator with 2 A power switch  
650 kHz or 1.2 MHz switching frequency  
Output adjustable to 20 V  
350 mA logic voltage regulator  
Selectable output voltages: 2.5 V, 2.85 V, 3.3 V  
VCOM amplifier with 300 mA drive  
Gate pulse modulation circuitry  
Independently adjustable delay and falling slope  
General  
COMP SS VIN_1 VIN_2  
ADD8754  
FB  
STEP-UP SWITCHING  
REGULATOR  
LX  
FREQ  
SHDN  
UNDER VOLTAGE LOCKOUT  
AND THERMAL PROTECTION  
LOGIC VOLTAGE  
REGULATOR  
LDO_OUT  
ADJ  
3 V to 5.5 V input  
Undervoltage lockout  
VDD_2  
OUT  
Thermal shutdown  
24-lead, Pb-free LFCSP package  
POS  
NEG  
VCOM AMPLIFIER  
APPLICATIONS  
TFT LCD panels for monitors, TVs, and notebooks  
GATE PULSE  
MODULATION  
VGH  
VGH_M VDD_1 CE RE VFLK  
VDPM  
Figure 1.  
GENERAL DESCRIPTION  
350 mA. Three selectable output voltages are available: 2.5 V,  
2.85 V, and 3.3 V.  
The ADD8754 is optimized for use in TFT LCD applications,  
requiring only external charge pump components to provide all  
the requirements for panel power, VCOM, and gate modulation.  
Included in a single chip are a high frequency step-up dc-to-dc  
switching regulator, logic voltage regulator, VCOM amplifier, and  
gate pulse modulation circuitry.  
The proprietary VCOM amplifier can deliver a peak output  
current of 300 mA and is specifically designed to drive TFT  
panel loads.  
The gate pulse modulator allows shaping of the TFT gate high  
voltage to improve image quality. The integrated switches  
provide the ability to independently control the delay and slope  
for the gate drive voltage.  
The step-up dc-to-dc converter provides up to 20 V output and  
includes a 2 A internal switch. Either a 650 kHz or 1.2 MHz step-  
up switching regulator frequency can be chosen, allowing easy  
filtering and low noise operation. It achieves 93% efficiency and  
features soft start to limit the inrush current at startup.  
The ADD8754 is offered in a 24-lead, Pb-free LFCSP package and  
is specified over the industrial temperature range of −40 to +85°C.  
The internal voltage regulator operates with an input voltage  
range of 3 V to 5.5 V and delivers a load current of up to  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable.  
However, no responsibility is assumed by Analog Devices for its use, nor for any  
infringements of patents or other rights of third parties that may result from its use.  
Specifications subject to change without notice. No license is granted by implication  
or otherwise under any patent or patent rights of Analog Devices. Trademarks and  
registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2005 Analog Devices, Inc. All rights reserved.  

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