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AL5873

更新时间: 2024-10-29 14:53:59
品牌 Logo 应用领域
美台 - DIODES 驱动
页数 文件大小 规格书
16页 1159K
描述
55V/250mA THREE-CHANNEL LINEAR LED DRIVER

AL5873 数据手册

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AL5873  
55V/250mA THREE-CHANNEL LINEAR LED DRIVER  
Description  
Pin Assignments  
The AL5873 is a three-channel linear LED driver with PWM dimming  
and analog dimming control. Each channel can drive up to 250mA  
with a total driving current up to 750mA. The LED channel current of  
the AL5873 can be set through two reference resistors connected to  
the REF1 and REF2 pins.  
TSSOP-16EP (Type DX)  
VIN  
NC  
FAULTB  
ADIM  
REF1  
FULL  
REF2  
LED1  
LED2  
LED3  
1
2
3
4
16  
15  
14  
13  
12  
11  
10  
9
PWM  
NC  
The AL5873 regulates LED current for each channel, accurate down  
to ±4%, with excellent dimming performance. The AL5873 enters  
EP  
NC  
5
6
7
standby mode to save power if no PWM signal is detected.  
GND  
GND  
GND  
The AL5873 monitors the temperature and reduces the LED current if  
the chip temperature exceeds the threshold temperature. Moreover,  
the input under voltage lock-out (UVLO), LED string open/short  
protection, over temperature protection (OTP), and fault indicator  
(FAULTB) are designed to improve system robustness.  
8
Top View  
The AL5873 is available in TSSOP-16EP (Type DX) package.  
Features  
Applications  
Wide Input Voltage Range from 5V to 55V  
Each Channel up to 250mA Current Capability  
Set Stop and Tail Current Independently Through Two Resistors  
Switch LED Current Between Stop and Tail Function  
Automatically via FULL Input  
Automotive aftermarket LED inner lamps  
Aftermarket rear lights tail and stop lights, rear turn indicators,  
parking lights, fog lights, reverse lights  
PWM Dimming via Both PWM Input and Power Supply  
Analog Dimming via ADIM Input  
Automatically Enter and Exit Standby Mode Without Enable Pin  
Internal Protections:  
.
.
.
.
Input Under Voltage Lock-Out (UVLO)  
LED String Open Protection  
LED String Short Protection  
Over Temperature Protection (OTP)  
Thermal Fold-Back if Chip Temperature Exceeds the Threshold  
Fault Reporting: UVLO, OTP, LED Open, and LED Short  
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/  
An Automotive-Compliant Part is Available Under Separate  
Datasheet (AL5873Q)  
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  
March 2022  
© Diodes Incorporated  
AL5873  
Document number: DS44751 Rev. 1 - 2  

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