Datasheet > T6309A-AX

T6309A-AX

更新时间： 2024-10-02 06:15:11

品牌	Logo	应用领域
TMT		转换器
页数	文件大小	规格书
13页	337K
描述
Micropower Step-up DC/DC Converter

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中文翻译

获取价格

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T6309A-AX 数据手册

tmCH

T6309A

Micropower Step-up DC/DC Converter

FEATURES

GRNERAL DESCRIPTION

• Matched LED Current with Overvoltage

Protection

The T6309A is a step-up DC/DC converter

that drives LED with a constant current. The

device can driver up to 6 series LEDs from a

single-cell Li-Ion battery. Series connection

of the LEDs provides constant LED current

that results in uniform brightness.

• Drives up to 6 LEDs in series

• Up to 85% Efficiency

• Low 400mV Feedback Reference,

Optional 1.19V Feedback Reference

• Internal Current Limit 300mA

• Under Voltage Lock Out Circuits

• 0.1uA Low Shutdown Supply Current

• 6-pin SOT-23 Package

The T6309A features a minimum off-time

current-limited PFM control scheme. The

LED current is set with an external sense

resistor (Rs) and is regulated by the feedback

pin (FB) that regulates the voltage across the

sense resistor to 400mV (typ). The low

400mV feedback reference voltage reduces

power loss and improves efficiency for LED

driver applications. Optional 1.19V feedback

reference is available for normal output

voltage applications like LCD bias. Output

overvoltage protection (OVP) is integrated to

prevent damage in case of output open circuit

condition (e.g. faulty LED). The OVP pin can

monitor the output voltage and turn off the

converter in the event of overvoltage

condition. The T6309A is available in SOT-

23-6 packages.

• ESD Human Body Mode Over 5KV

APPLICATIONS

• Cellular Phones

• Portable Communication Devices

• Handheld Electronics

• PDAs

• LED/Display Back Light Driver

PART NUMBER EXAMPLES

Feedback Referemce

Part no.

Voltage

400mV

1.19V

T6309A-AX

T6309A-BX

TM Technology Inc. reserves the right

P. 1

Publication Date: MAY. 2007

Revision: A

to change products or specifications without notice.

12 3 4 5 6 7...13

中文翻译

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