Datasheet > IS31LT3350

IS31LT3350

更新时间： 2024-11-11 12:23:07

品牌	Logo	应用领域
美国芯成 - ISSI		驱动器开关
页数	文件大小	规格书
12页	421K
描述
40V LED DRIVER WITH INTERNAL SWITCH

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中文翻译

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IS31LT3350 数据手册

IS31LT3350

40V LED DRIVER WITH INTERNAL SWITCH

OCTOBER 2011

GENERAL DESCRIPTION

FEATURES

The IS31LT3350 is a continuous mode inductive

step-down converter, designed for driving a single LED or

multiple series connected LEDs efficiently from a voltage

source higher than the LED voltage. The chip operates

from an input supply between 6V and 40V and provides

an externally adjustable output current of up to 750mA.

Depending upon supply voltage and external

components, this can provide up to 30 watts of output

power.

The IS31LT3350 includes an integrated output switch

and a high-side output current sensing circuit, which uses

an external resistor to set the nominal average output

current.

Output current can be adjusted linearly by applying an

external control signal to the ADJ pin. The ADJ pin will

accept either a DC voltage or a PWM waveform. This will

provide either a continuous or a gated output current.

Applying a voltage of 0.2V or lower to the ADJ pin turns

the output off and switches the chip into a low current

standby state.

The chip is assembled in SOT23-5 and SOT89-5

package. SOT23-5 is available for 350mA output current

application. SOT89-5 is available for 750mA output

current application.



Simple low parts count

Internal 40V power switch

Wide input voltage range: 6V to 40V

Up to 750mA output current（SOT89-5

package）



High efficiency (up to 95% )

Typical 1200：1 dimming ratio

Typical 5% output current accuracy

Single pin on/off and brightness control using DC

voltage or PWM



Up to 1MHz switching frequency

Inherent open-circuit LED protection

Thermal shutdown protection circuitry

Two packages available for different current

APPLICATIONS



Low voltage halogen replacement LEDs

Automotive lighting

Low voltage industrial lighting

LED back-up lighting

Illuminated sign

APPLICATION CIRCUIT

time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are

advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products.

Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the

product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not

authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:

a.) the risk of injury or damage has been minimized;

b.) the user assume all such risks; and

c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances

Integrated Silicon Solution, Inc. – www.issi.com

Rev. A, 10/18/2011

12 3 4 5 6 7...12

中文翻译

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与IS31LT3350相关器件

型号	品牌	获取价格	描述	数据表
IS31LT3350-V1SDLS2-TR	ISSI	获取价格	40V LED DRIVER WITH INTERNAL SWITCH
IS31LT3350-V1STLS2-TR	ISSI	获取价格	40V LED DRIVER WITH INTERNAL SWITCH
IS31LT3350-V2SDLS2-TR	ISSI	获取价格	LED Driver, 10-Segment, PDSO5, LEAD FREE, SOT-89, 5 PIN
IS31LT3350-V2STLS2-TR	ISSI	获取价格	40V LED DRIVER WITH INTERNAL SWITCH
IS31LT3352	ISSI	获取价格	40V LED DRIVER WITH TEMPERATURE COMPENSATION
IS31LT3352-V1GRLS2-TR	ISSI	获取价格	LED Driver, 10-Segment, PDSO8, LEAD FREE, SOP-8
IS31LT3353-SDLS4-TR	ISSI	获取价格	LED Driver
IS31LT3354	ISSI	获取价格	40V LED DRIVER WITH EXTERNAL SWITCH
IS31LT3354-STLS2-TR	ISSI	获取价格	LED Driver, 10-Segment, PDSO5, LEAD FREE, SOT-23, 5 PIN
IS31LT3360	ISSI	获取价格	40V/1.2A LED DRIVER WITH INTERNAL SWITCH

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