Datasheet > AL8860_18

AL8860_18

更新时间： 2022-02-26 11:42:32

品牌	Logo	应用领域
美台 - DIODES		驱动
页数	文件大小	规格书
17页	569K
描述
40V 1.5A BUCK LED DRIVER

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AL8860_18 数据手册

AL8860

40V 1.5A BUCK LED DRIVER

Description

Pin Assignments

(Top View)

The AL8860 is a hysteresis mode DC/DC step-down converter,

designed for driving single or multiple series connected LEDs

efficiently from a voltage source higher than the LED voltage. The

device can operate from an input supply between 4.5V and 40V and

provide an externally adjustable output current up to 1A for TSOT25

package and 1.5A for MSOP-8EP package. Depending upon supply

voltage and external components, this converter can provide up to 40

watts output power.

TSOT25

The AL8860 integrates the power switch and a high-side output

current sensing circuit, which uses an external resistor to set the

nominal average output current.

(Top View)

Dimming can be realized by applying an external control signal to the

CTRL pin. The CTRL pin will accept either a DC voltage signal or a

PWM signal.

The soft-start time can be adjusted by an external capacitor from the

CTRL pin to ground. Applying a voltage of 0.2V or lower to the CTRL

pin can turn off the output and make the device enter into standby

state with low current consumption.

MSOP-8EP

Applications

Features



LED Retrofit for Low Voltage Halogen



Low BOM Counts

Low Voltage Industrial Lighting

Illuminated Signs

Wide Input Voltage Range: 4.5V to 40V

Output Current Up to 1.5A

External Driver with Multiple Channels

Internal 40V NDMOS Switch

Typical 5% Output Current Accuracy

Single Pin for On/Off and Brightness Control by DC Voltage or

PWM Signal



Recommended Analog Dimming Range: 5% ~100%

Soft-Start

High Efficiency (Up to 97%)

LED Short Protection

Inherent Open-Circuit LED Protection

Over Temperature Protection (OTP)

Up to 1MHz Switching Frequency

Pb-Free TSOT25 and MSOP-8EP Packages

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated‟s definitions of Halogen- and Antimony-free, "Green" and

Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

1 of 17

www.diodes.com

July 2018

AL8860

Document number: DS39014 Rev. 4 - 2

12 3 4 5 6 7...17

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