Datasheet > T6313A-AF

T6313A-AF

更新时间： 2024-01-03 12:48:22

品牌	Logo	应用领域
TMT		白色LED灯泵
页数	文件大小	规格书
10页	90K
描述
Low Noise, High Efficiency WhiteLED Charge Pump

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技术参数
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T6313A-AF 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.68
Is Samacsys：	N	Base Number Matches：	1

T6313A-AF 数据手册

tmCH

Preliminary T6313A

Low Noise, High Efficiency

WhiteLED Charge Pump

FEATURES

GRNERAL DESCRIPTION

The T6313A is a charge pump DC/DC

converter driving a constant current up to 20mA

for each LED of total four LEDs. It is a high

efficiency device that is up to 93%, and it would

be a suitable driving device for LED back light

application. The T6313A operates in a 1.5x

charge pump mode based on input voltage from

2.7v to 5.5v. Operation frequency is at fixed

high frequencies either 500KHz or 1MHz

typically. It can drive 4 white LEDs connected

in parallel and provides tightly matched

regulated current to achieve uniformity of

brightness in LCD backlighting applications.

The T6313A uses two input pins to enable,

disable, and set the LED drive current for one of

32 levels of brightness. Also has a built-in soft-

start circuitry to prevent excessive inrush

current during start-up. A very low shutdown

current feature and a low quiescent current will

consume very little power and allow the device

to operate in a very high efficiency. The

T6313A is available in 16-pin QFN packages.

• 4 Current Source Outputs

• 20mA Full Scale Current for each LED

• Power efficency up to 93%

• 32 levels for brightness

• 2 wires interface

• Low Noise Constant Frequency Operation

• High Accuracy Brightness Matching

• White LED Backlighting

• 0.5% LED current matching

• Automatic Soft-Start

• No External Inductors, Schottky, or Zener

Diode and Resistor Required

• 500KHz Switching Frequency

(1MHz optional)

• 2.7V to 5.5V supply voltage

• Shutdown current is less 1uA

• Temperature Range -40 to 85°C

• 16-Pin QFN

Applications

• Cellular Phones

• Portable Communication Devices

• Handheld devices

• Digital Cameras

• PDAs

• LED/Display Back Light Driver

• LEDs for Camera Flash

PART NUMBER EXAMPLES

PART NO.

PACKAGE

Marking

T6313A-AF QFN 4mm X 4mm

T6313A-BF QFN 3mm X 3mm

6313

TM Technology Inc. reserves the right

to change products or specifications without notice.

P. 1

Publication Date: JAN. 2006

Revision: C

12 3 4 5 6 7...10

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