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NCP1840Q8A6MNG

更新时间： 2024-11-24 11:11:27
品牌 Logo 应用领域
安森美 - ONSEMI 驱动驱动器
页数 文件大小 规格书
20页 377K
描述
LED 驱动器，8 沟道，可编程

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中文翻译

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NCP1840Q8A6MNG 数据手册

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NCP1840  
8-Channel Programmable  
LED Driver  
The NCP1840 is a general purpose LED driver that allows for full  
2
programmability of eight separate LED channels through a simple I C  
serial communication interface. The current through each of the  
channels can be up to 30 mA and is controlled via constant current  
regulation. Each channel has programmable Pulse−Width Modulation  
(PWM) control along with programmable current control, allowing  
for very flexible, optimized LED brightness and color control.  
Logarithmic output current levels are achieved to best accommodate  
natural eye viewing.  
A QUAD−MODE® charge pump allows for higher forward voltage  
LEDs and/or multiple LEDs in series per channel to be driven with a  
low−voltage supply. This makes the NCP1840 capable of efficiently  
driving LEDs in applications that are running off of low−voltage  
processor supply levels along with battery−powered applications. Few  
external components are required making this a very cost−effective  
solution for multi−channel LED driving.  
http://onsemi.com  
MARKING  
DIAGRAM  
20  
1
NCP  
1840  
ALYWG  
G
QFN20  
4 x 4 mm  
CASE 485E  
NCP1840 = Specific Device Code  
A
L
Y
W
G
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= Pb−Free Package  
Features  
(*Note: Microdot may be in either location)  
• Individual Current Level Programmability (5−bit) per Channel  
• Individual PWM Programmability (6−bit) per Channel  
2
• I C Serial Communication Interface for Programming  
ORDERING INFORMATION  
• Constant Current Regulated Outputs − 30 mA Maximum per Channel  
• Logarithmic Output Current Levels  
†
Device  
Package  
Shipping  
490 / Tray  
NCP1840Q8A6MNG  
QFN20  
• External Resistor for Setting Full−Scale Current for all Channels  
• Low Noise QUAD−MODE Charge Pump Delivers > 90% Efficiency  
• High LED Forward−Voltage Compliant − up to 4.1 V  
• Soft−Start POR Reduces Noise  
(Pb−Free)  
NCP1840Q8A6MNTWG QFN20 2500 / Tape &  
(Pb−Free) Reel  
†For information on tape and reel specifications,  
including part orientation and tape sizes, please  
refer to our Tape and Reel Packaging Specifications  
Brochure, BRD8011/D.  
• Registers are Write/Read  
• Fault and Thermal Protection  
• Small QFN Package  
• These are Pb−Free Devices  
Typical Applications  
♦ Electronic Musical Instruments  
♦ Aftermarket Automotive Trim  
♦ Keypad Lighting  
• Status or Diagnostic Indicators  
♦ Portables (Notebook Battery Monitors, Handheld  
Equipment Testers, etc.)  
• Small−Format Display Drivers  
♦ Tablet PCs and PDAs  
♦ Smart Phones  
• “True Green” LED Applications  
♦ Computing (Servers, Workstations, etc.)  
♦ Electronic Payment Systems  
• Decorative Lighting  
♦ Toys and Gaming − “Fun Lighting”  
© Semiconductor Components Industries, LLC, 2013  
1
Publication Order Number:  
NCP1840/D  
February, 2013 − Rev. 3  
1234567...20

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