Datasheet > AL1665

AL1665

更新时间： 2023-12-06 20:11:17

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
17页	831K
描述
High performance dimming LED controller

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AL1665 数据手册

AL1665

HIGH PERFORMANCE DIMMABLE LED CONTROLLER

Description

Pin Assignments

The AL1665 is a high-performance single-stage flyback and buck-

boost controller, targeting dimmable LED lighting application. It is a

primary side regulation (PSR) controller that can provide accurate

constant current (CC) regulation without optocoupler and secondary

control circuitry. It can be operated at BCM mode, which results in low

EMI and high efficiency, and keeps high power factor (PF) and low

total harmonic distortion (THD) under universal input voltage.

(Top View)

ADIM

VCC

NTC/PWM

The AL1665 can support analog/PWM dimming modes. When a

50mV to 2.5V DC signal is applied on ADIM pin, the device is

operated in analog dimming mode. The analog dimming range is 5%

to 100%. When a PWM signal is applied to NTC/PWM pin, the device

is operated at PWM dimming mode. The PWM dimming range is

0.5% to 100% (1k PWM dimming frequency).

OUT

GND

COMP

SO-8 (Standard)

The AL1665 has full protection features. It integrates multiple

protections including undervoltage lockout (UVLO), output

overvoltage (OVP), output short circuit (OSP), overcurrent protection

(OCP), winding short circuit, secondary diode short, internal thermal

foldback (TFP), and overtemperature protection (OTP).

The AL1665 is available in SO-8 (Standard) package.

Applications

Features



Primary Side Regulation without Optocoupler

Valley Switching for Low Switching Loss

Tight CS Reference Voltage 0.4V±1.5%



General LED Lighting Driver with Dimming Function

General Purpose Constant Current Source

LED Backlighting Driver



High PF>0.9 and Low THD<20%

Support Analog and PWM Dimming

Smart LED Lighting

Analog Dimming Range: 5% to 100%

PWM Dimming Range: 0.5% to 100% (1k PWM Frequency)



Internal Protections

Undervoltage Lockout (UVLO)

Output Overvoltage Protection (OVP)

Output Short Protection (OSP)

Overcurrent Protection (OCP)

Winding Short-Circuit Protection

Secondary Diode Short Protection

Shorted Current Sense Protection

User Programmable NTC Based Thermal Foldback

Internal Thermal Foldback Protection (TFP)

Overtemperature Protection (OTP)



Tight LED Current Variation Range

LED Current Line Regulation: ±2%

LED Current Load Regulation: ±2% Full Load to Half Load



Tight Output Open Voltage Variation Range

Package: SO-8 (Standard)

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-Q100/101/200, 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 17

www.diodes.com

March 2020

AL1665

Document number: DS41772 Rev. 3 - 2

12 3 4 5 6 7...17

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与AL1665相关器件

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AL1666	DIODES	获取价格	HIGH PERFORMANCE DIMMABLE LED CONTROLLER
AL1666A	DIODES	获取价格	HIGH PERFORMANCE DIMMABLE LED CONTROLLER
AL1672-40CSP-13	DIODES	获取价格	LED Driver,
AL1673-20CSP-13	DIODES	获取价格	LED Driver,
AL1676	DIODES	获取价格	UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER
AL1676-10BS7-13	DIODES	获取价格	UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER
AL1676-20AS7-13	DIODES	获取价格	UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER
AL1676-20BS7-13	DIODES	获取价格	UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER
AL1676-20CS7-13	DIODES	获取价格	UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER
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