T6311A 併聯式白光LED驅動器

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Update：2009-04-10 views：4345

T6311A 详细介绍

T6311A 型号
台晶/tmtech 品牌系列产品 T6311A
T6311A 批号 06+07+
T6311A 数量 0
T6311A 封装
T6311A 包装
T6311A 备注
T6311A PDF技术资料 T6311A.pdf
T6311A 询价

台晶科技成功開發出併聯式白光LED驅動器

T6311A 提供只需最簡單的週邊元件控制方式, 既可提供及控制定電流供驅動白光LED，本裝置可提供四組穩定的電流源供點亮LED背光板，, 而定電流的最大好處為可提供均勻一致的背光亮度，T6311A 的封裝型式為SOP-8，主要應用領域為手機、數位相機及個人數位助理。

FEATURES
• Low 200mV Dropout at 9mA
• Up to 150mA LED Bias Current
• 0.3% LED Current Matching
• Simple LED Brightness Control
• Low 40uA Supply Current
• Low 0.05uA Shutdown Current
• 2.5V to 5.5V Supply Voltage Range
• SOP-8 and SOT23-6 Package
• Output channel :
SOP-8 package for four channel
SOT23-6 package for three channel
Applications
• Cellular Phones
• Portable Communication Devices
• Handheld Electronics
• Digital Cameras
• PDAs
• LED/Display Back Light Driver
• LEDs for Camera Flash
PART NUMBER EXAMPLES
GRNERAL DESCRIPTION
The T6311A low-dropout bias supply for
white LEDs is a high-performance alternative
to the simple ballast resistors used in
conventional white LED designs. The T6311A
uses a single resistor to set the bias current for
four LEDs, which are matched to 0.3%. The
T6311A consumes only 40uA of supply
current when enabled and 0.05uA when
disabled. The T6311A advantages over ballast
resistors include significantly better LED to
LED bias matching, much lower bias variation
with supply voltage variation, significantly
lower dropout voltage, and in some
applications, significantly improved efficiency.
The T6311A requires a 200mV dropout at a
9mA load on each output to match the LED
brightness. The T6311A is available in SOP-8
and SOT23-6 package.
PART NO . PACKAGE
T6311A-D SOP-8
T6311A-X SOT23-6