Datasheet > AL3069

AL3069

更新时间： 2024-11-03 14:55:43

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
16页	1818K
描述
Four-Channel Current Source Boost LED Driver

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中文翻译

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AL3069 数据手册

AL3069

FOUR-CHANNEL CURRENT SOURCE BOOST LED DRIVER

Description

Pin Assignments

The AL3069 is a high-efficiency four-channel boost controller for WLED

backlight applications. It operates over a wide input voltage range, from

4.5V to 60V.

(Top View)

CH4

ISET

OVP

1 6

1 5

CH3

The current of the four channels is simply programmed from 20mA to

400mA with an external resistor. The current match between any

channels is ±0.5% (typical). Its operating frequency can be adjusted

from 0.1MHz to 1MHz.

GND

CH2

1 4

1 3

CH1

The AL3069 can support two independent dimming modes: direct PWM

dimming and PWM to analog dimming. This function makes AL3069

flexible to design in different dimming applications.

1 2

PWMD

COMP

PWMA

VIN

1 1

1 0

OUT

VCC

Robust protection features include cycle by cycle current limit, soft-

start, UVLO, programmable OVP, OTP, open/short LED protection,

Schottky diode short and open protection, inductor short-circuit

protection and V_OUTshort protection.

SO-16

The IC is available in SO-16 package.

Features

Applications



Input Voltage Range: 4.5V to 60V



LCD monitors

Drivers up to Four Strings in Parallel, 250mA per String, 400mA

Pulse Current

LCD display modules

LCD TVs



Typical ±0.5% Current Matching

Low Ripple for Low BOM Cost

4kV HBM ESD Class

High Voltage Pins CS and OVP for Safety Test

Supports Direct PWM Dimming, PWM to Analog Dimming

Minimum PWM Dimming Duty Cycle Can Be 1/5,000 at 100Hz

Dimming Frequency



LED Open/Short Protection

Schottky Diode/Inductor Short-Circuit Protection

Built-in OCP, OVP, OTP, UVLO, V_OUTShort/Schottky Diode Open

Protection



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

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

For automotive applications requiring specific change

control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP

capable, and manufactured in IATF 16949 certified facilities),

please contact us or your local Diodes representative.

https://www.diodes.com/quality/product-definitions/

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 16

www.diodes.com

June 2023

AL3069

Document number: 45783 Rev. 2 - 2

12 3 4 5 6 7...16

中文翻译

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