Datasheet > T6313A

T6313A

更新时间： 2024-02-06 02:36:04

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
数据手册

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T6313A 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 数据手册

tmCH

Preliminary T6313A

Functional Description

first rising edge of SET and increases by one

when another rising edge of SET is shifted in.

The outputs of the counter will map to 32

levels of LED current. Each level (code) is

mapped to a different current, which is a

defferent brightness (Fig-2 & Tabel1). Once

the final clock cycle is input for the desired

brightness level, the SET pin is held high to

maintain the device output current at the

programmed level. The device is disabled

350us after the SET pin transitions to a logic

low state. A level will stay until EN goes low.

T6313A is power down when EN goes low.

After EN goes low then any pulse shifting

from SET pin is invalid (Fig-3).

The T6313A uses a fractional (x1.5)

conversion charge pump to generate a voltage

for the regulated current sinks. These current

sinks are used to ensure a constant current for

each LED.

The charge pump can generate total 80

mA of output current, so each of the 4 LED

outputs can be powered with up to 20 mA of

current.

The T6313A uses two wires to enable

and set the LED currents. The EN pin is used

to either enabling or disabling the T6313A.

When EN is high, then the numbers of

pulse shift from SET pin are valid and an

internal counter counts up from 1 from the

I diode(mA)

Code

Fig - 2

TM Technology Inc. reserves the right

to change products or specifications without notice.

P. 6

Publication Date: JAN. 2006

Revision:C

1...3 4 567 8 9 10

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