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LM3421Q0MHX PDF预览

LM3421Q0MHX

更新时间： 2024-01-28 07:31:57
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器接口集成电路光电二极管控制器
页数 文件大小 规格书
48页 1323K
描述
N-Channel Controllers for Constant Current LED Drivers

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LM3421Q0MHX 技术参数

生命周期：Transferred包装说明：HSSOP,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.36
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDSO-G16
长度：5 mm复用显示功能：NO
功能数量：1区段数：1
端子数量：16最高工作温度：150 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, SHRINK PITCH认证状态：Not Qualified
最大供电电压：75 V最小供电电压：4.5 V
标称供电电压：14 V表面贴装：YES
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
宽度：4.4 mmBase Number Matches：1

LM3421Q0MHX 数据手册

 浏览型号LM3421Q0MHX的Datasheet PDF文件第2页浏览型号LM3421Q0MHX的Datasheet PDF文件第3页浏览型号LM3421Q0MHX的Datasheet PDF文件第4页浏览型号LM3421Q0MHX的Datasheet PDF文件第5页浏览型号LM3421Q0MHX的Datasheet PDF文件第6页浏览型号LM3421Q0MHX的Datasheet PDF文件第7页 
January 21, 2010  
LM3421  
LM3421Q1 LM3421Q0  
LM3423  
LM3423Q1 LM3423Q0  
N-Channel Controllers for Constant Current LED Drivers  
General Description  
Features  
The LM3421/23 are versatile high voltage N-channel MosFET  
controllers for LED drivers . They can be easily configured in  
buck, boost, buck-boost and SEPIC topologies. This flexibili-  
ty, along with an input voltage rating of 75V, makes the  
LM3421/23 ideal for illuminating LEDs in a large family of ap-  
plications.  
LM3421Q1/LM3423Q1 are Automotive Grade products  
■
that are AEC-Q100 grade 1 qualified (-40°C to +125°C  
operating junction temperature) and similarly LM3421Q0/  
LM3423Q0 are AEC-Q100 grade 0 qualified (-40°C to  
+150°C operating junction temperature)  
VIN range from 4.5V to 75V  
■
■
Adjustable high-side current sense voltage allows for tight  
regulation of the LED current with the highest efficiency pos-  
sible. The LM3421/23 uses Predictive Off-time (PRO) control,  
which is a combination of peak current-mode control and a  
predictive off-timer. This method of control eases the design  
of loop compensation while providing inherent input voltage  
feed-forward compensation.  
High-side adjustable current sense  
2Ω, 1A Peak MosFET gate driver  
Input under-voltage and output over-voltage protection  
■
■
■
■
■
■
■
■
PWM and analog dimming  
Cycle-by-cycle current limit  
Programmable switching frequency  
The LM3421/23 devices include a high-voltage startup regu-  
lator that operates over a wide input range of 4.5V to 75V. The  
internal PWM controller is designed for adjustable switching  
frequencies of up to 2.0 MHz, thus enabling compact solu-  
tions. Additional features include "zero current" shutdown,  
"Zero current" shutdown and thermal shutdown  
LED output status flag (LM3423/23Q1/23Q0 only)  
Fault status flag and timer (LM3423/23Q1/23Q0 only)  
analog dimming, PWM dimming, over-voltage protection, un- Applications  
der-voltage lock-out, cycle-by-cycle current limit, and thermal  
shutdown.  
LED Drivers - Buck, Boost, Buck-Boost, and SEPIC  
■
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Indoor and Outdoor Area SSL  
Automotive  
The LM3423 also includes an LED output status flag, a fault  
flag, a programmable fault timer, and a logic input to select  
the polarity of the dimming output driver.  
General Illumination  
Constant-Current Regulators  
The LM3421Q1/23Q1 are AEC-Q100 grade 1 qualified and  
LM3421Q0/23Q0 are AEC-Q100 grade 0 qualified.  
Typical Boost Application Circuit  
300673b6  
Boost Evaluation Board  
9 Series LEDs at 1A  
300673k9  
© 2010 National Semiconductor Corporation  
300673  
www.national.com  
1234567...48

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