Datasheet > AL3022

AL3022

更新时间： 2023-12-06 20:10:53

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
12页	429K
描述
PWM Boost Controller for LED Driver

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中文翻译

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数据手册

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AL3022 数据手册

A Product Line of

Diodes Incorporated

AL3022

PWM BOOST CONTROLLER

Description

Pin Assignments

The AL3022 is

a constant 140KHz, voltage mode, external

compensation boost controller. The AL3022 has low feedback voltage

and makes it ideal for low cost LED backlight supplies. The AL3022

can support external PWM dimming and analog dimming.

(Top View)

VIN

OUT

GND

The AL3022 offers complete system protection with integrated Under

Voltage Lockout, Over Voltage Protection, Over Current Protection,

OVP

COMP

Output Voltage (V_OUT

) Short to GND Protection and Over

Temperature Protection circuitry.

To satisfy the limited PCB mounting space requirements, this IC is

available in SO-8 package to save space.

Features

SO-8



Voltage Mode PWM Controller

Low 0.2V Reference Voltage

Fixed 140KHz Frequency

Applications

External PWM Dimming and Analog Dimming

Low Shutdown Current (0.1µA)

External Compensation



LED TV

LED Monitor

LED Display Module

Built-in UVLO Function

Built-in OVP

Built-in OTP

Built-in OCP

Built-in V_OUTShort to GND Protection

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 (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

V_IN

22µH/2A

V_OUT

22µF/25V

10µF/

50V

10µF/

50V

1µF

2.2Ω

10KΩ

VIN

OUT

GND

150kΩ

1.1Ω

1.2Ω

10KΩ

COMP

5.1KΩ

OVP

20KΩ

100pF

220nF

1 of 12

www.diodes.com

September 2014

AL3022

Document number: DS36514 Rev. 3 - 2

12 3 4 5 6 7...12

中文翻译

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