Datasheet > AL8821

AL8821

更新时间： 2022-02-26 12:45:31

品牌	Logo	应用领域
美台 - DIODES		驱动
页数	文件大小	规格书
14页	270K
描述
BOOST LED DRIVER

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AL8821 数据手册

AL8821

50V, 2A BOOST LED DRIVER

Description

Pin Assignments

The AL8821 is a boost converter that delivers an accurate constant

current for MR16 and similar LED Lamps. With proprietary control

scheme, the LED driver is compatible with many commonly used

electronic transformers and provides designs with High Power Factor

(PF) and low Total Harmonic Distortion (THD) for these applications.

The operation frequency is up to 1MHz that allows the use of small

size inductor. With the package of SO-8EP, the AL8821 has small

thermal resistance and can be used for wide range of output power.

The driver can be used for dimmable MR16 application and can be

compatible with leading-edge dimmer and trailing-edge dimmer.

(Top View)

VCC

VIN

COMP

Features



Wide Input Voltage Range: 5V to 36V

Internal 50V NDMOS Switches

SO-8EP

Continuous Conduction Mode (CCM) Operation

Up to 1MHz Switching Frequency

Applications

High PF > 0.9 and Low THD < 30% and Low Ripple < 20%

Compatible With Leading-edge Dimmer And Trailing-edge

Dimmer



Non-dimmable MR16 Lamps

Dimmable MR16 Lamps

General Illumination Lamps



Internal Protections

Under Voltage Lock Out (UVLO)

Output Open

Over Temperature Protection (OTP)



Pb-free SO-8EP

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) compliant.

2. See http://www.diodes.com/quality/lead_free.html 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 (<1η00ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

Vac

C_O

R_SET

R_HYS

VIN

VCC

R_FB

COMP

(Exposed Pad)

1 of 14

www.diodes.com

February 2017

AL8821

Document number: DS37671 Rev. 2 - 2

12 3 4 5 6 7...14

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