参数资料
| 型号： | MAX9552EUD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC BUFFER VCOM 14-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | TFT-LCD 面板：VCOM 驱动器 |
| 电路数： | 4 |
| 电流 - 电源： | 2mA |
| 电流 - 输出 / 通道： | 55mA |
| 电压 - 电源，单路/双路(±)： | 6 V ~ 20 V，±3 V ~ 10 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP （0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 14-TSSOP-EP |
| 包装： | 带卷 (TR) |
MAX9550/MAX9551/MAX9552
High-Current VCOM Drive Buffers
for TFT LCDs
6
_______________________________________________________________________________________
MAX9550
16V
SUPPLY
16V
SUPPLY
*C1 = 4.7F
CL =1F
*C2 = 0.1F
*PLACE 4.7F AND 0.1F CAPACITORS AS CLOSE TO PIN AS POSSIBLE.
**RS INCLUDES THE GENERATOR RESISTANCE.
NOTE: PLACE CL AS CLOSE TO OUT PIN AS POSSIBLE AND KELVIN
SENSE THE FEEDBACK LOOP CONNECTION AS SHOWN.
0V TO 1.5V AT 50kHz
CS = 0.1F
**RS = 2.2
IN+
OUT
VOUT
TEST LOAD
VREF
VDD
IN-
GND
Figure 1. Settling Time Test Circuit
Detailed Description
The MAX9550/MAX9551/MAX9552 operational transcon-
ductance amplifiers (OTA) hold the VCOM voltage sta-
ble while providing the ability to source and sink a high
current quickly (800mA typ) into a capacitive load such
as the backplane of a TFT-LCD panel. The output settles
to within 0.1% in less than 2s. The fast settling time is
achieved by increasing the transconductance of the
buffer as the output current increases (see the Typical
Operating Characteristics).
In addition, the MAX9550/MAX9551/MAX9552 directly
drive the capacitive load in the VCOM layer of the
TFT LCD without the need for a series resistor.
The MAX9550/MAX9551/MAX9552 unity-gain band-
width is:
GBW = gM / 2πCOUT
where COUT is the capacitive load at the output and gM
is the transconductance.
To insure buffer stability, place a 1F low-ESR capaci-
tor as close to the OUT pin as possible. However, this
value may be reduced if the TFT-LCD panel load pro-
vides some of the capacitance and the resistance in
series when this capacitance is low. Connect the feed-
back at OUT using a Kelvin connection at the low-ESR
capacitor.
Thermal Shutdown with Temperature
Hysteresis
The MAX9550/MAX9551/MAX9552 are capable of high
output currents and therefore, feature thermal-shutdown
protection with temperature hysteresis. When the die tem-
perature reaches +160°C, the devices shut down. When
the die cools down by 15°C, the devices turn on again.
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| MAX9552EVKIT+ | 功能描述:LCD 驱动器 Evaluation Kit for the MAX9552 RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| MAX9568EEE+ | 功能描述:视频 IC RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| MAX9568EEE+T | 功能描述:视频 IC RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| MAX9568EVKIT+ | 功能描述:视频 IC 开发工具 RoHS:否 制造商:Texas Instruments 产品:Evaluation Boards 类型:YPbPr to RGBHV Converters 工具用于评估:LMH1251 工作电源电压:5 V |
| MAX9583AZT+ | 制造商:Maxim Integrated Products 功能描述:VID AMP DUAL 3.6V 6PIN TSOT-23 - Rail/Tube |
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