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AAT2823IBK-T1

更新时间： 2024-10-01 19:58:59
品牌 Logo 应用领域
思佳讯 - SKYWORKS /
页数 文件大小 规格书
28页 3398K
描述
LED Driver,

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中文翻译

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AAT2823IBK-T1 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：TQFN-24Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.83接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：S-XQCC-N24长度：4 mm
复用显示功能：NO功能数量：1
区段数：13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：UNSPECIFIED封装代码：HVQCCN
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：NOT SPECIFIED座面最大高度：0.8 mm
最大供电电压：5.5 V最小供电电压：2.5 V
标称供电电压：5 V电源电压1-最大：13.2 V
电源电压1-分钟：2.7 V电源电压1-Nom：12 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：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mmBase Number Matches：1

AAT2823IBK-T1 数据手册

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DATA SHEET  
AAT2822/2823/2824/2825  
TFT-LCD DC/DC Converter with WLED Driver and VCOM Buffer  
General Description  
Features  
The AAT2822-AAT2825 family of integrated panel power  
solutions provides the regulated voltages required by an  
active-matrix thin-film transistor (TFT) liquid-crystal dis-  
play (LCD). The AAT2822 includes a triple-output DC-DC  
converter, a LED backlight driver, and a VCOM buffer in  
a 4 mm x 4mm TQFN package. The primary 1.3MHz  
DC-DC boost converter uses an ultra-small inductor and  
ceramic capacitor to generate output voltage (VAVDD) of  
up to 14.5V for the charge pumps. The low on-resistance  
of the integrated power MOSFET allows for efficiency up  
to 93%.  
LCD Bias Power  
•
•
2.5V to 5.5V Input Supply Range  
1.3MHz Fixed Frequency Current-Mode Step-Up  
Regulator  
•
•
Fast Transient Response  
Adjustable Voltage up to 14.5V  
±1% Typical Accuracy  
▪
•
•
•
Small External Inductor and Capacitors  
Integrated Soft Start and Sequencing of All Rails  
Short-Circuit, Over-Voltage, and Over-Temperature  
Protection  
Positive Output, VGH  
The two charge pumps independently regulate a positive  
output (VGH) and a negative output (VGL). These low-  
power outputs use external diode and capacitor stages  
to regulate output voltages up to +30V and down to  
-30V. A proprietary regulation algorithm minimizes out-  
put ripple when using small capacitors.  
•
Up to 13.2V Input Supply (VDD)  
•
Adjustable Voltage up to 30V @ 20mA  
±3% Typical Accuracy  
▪
Negative Output, VGL  
•
Up to 13.2V Input Supply (VDD)  
•
Adjustable Voltage down to -30V @ 20mA  
The high efficiency backlight driver provides a constant  
current output capable of boosting up to 28V. The driver  
is an ideal power solution for backlight applications with  
up to seven white LEDs in series or up to 39 white LEDs  
in a parallel and series configuration. LED brightness is  
PWM controlled up to 1kHz. Filtered PWM is supported  
for higher frequencies.  
± 3% Typical Accuracy  
▪
WLED Driver  
•
•
Input Voltage Range: 2.5V to 25V  
Maximum Continuous Output:  
12V @ 260mA  
28V @ 50mA  
Panel sizes from 5" – 10"  
▪
▪
•
The high slew rate operational amplifier is suitable for  
VCOM buffering and gain adjustment.  
5.0" 3S5P  
5.6" 3S6P  
7.0" 3S9P  
8.0" 3S10P/11P  
▪
▪
▪
The sequencing of the power supplies ensures proper  
panel startup and avoid damage to the device.  
▪
10" 3S13P  
▪
The AAT2822 family is available in a Pb-free, 24-pin 4 x  
4mm TQFN package and operates over the -40°C to  
+85°C temperature range.  
•
•
Constant LED Current with 6% Accuracy  
PWM Dimming Control  
Up to 1kHz  
1.3MHz Switching Fixed Frequency  
▪
•
Up to 90% Efficiency  
▪
VCOM Buffer  
•
High-Performance  
13V/µs Slew Rate  
12MHz, -3dB Bandwidth  
±75mA Output Short-Circuit Current  
Low 1.5mA Quiescent Current  
▪
▪
•
•
Applications  
•
•
•
•
Automotive Displays  
Digital Photo Frames  
Netbooks  
PNDs  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
1
202081B  
• Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 2, 2012  
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中文翻译

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