Datasheet > T6311A-D

T6311A-D

更新时间： 2024-01-21 13:40:46

品牌	Logo	应用领域
TMT		/
页数	文件大小	规格书
9页	47K
描述
Low-Dropout, Constant-Current White LED Bias Supply

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T6311A-D 数据手册

tmCH

Preliminary Product spec. T6311A

Low-Dropout, Constant-Current

White LED Bias Supply

FEATURES

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.

• 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

PART NO.

T6311A-D

T6311A-X

PACKAGE

SOP-8

SOT23-6

TM Technology Inc. reserves the right

to change products or specifications without notice.

P. 1

Publication Date: JUN. 2005

Revision: C

12 3 4 5 6 7...9

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