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LM3421Q1MH PDF预览

LM3421Q1MH

更新时间: 2024-01-29 08:31:49
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器控制器
页数 文件大小 规格书
48页 1323K
描述
N-Channel Controllers for Constant Current LED Drivers

LM3421Q1MH 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:TSSOP
包装说明:HTSSOP,针数:16
Reach Compliance Code:compliantFactory Lead Time:1 week
风险等级:5.52其他特性:SEATED HGT-NOM
输入特性:STANDARD接口集成电路类型:LED DISPLAY DRIVER
JESD-30 代码:R-PDSO-G16JESD-609代码:e3
长度:5 mm湿度敏感等级:1
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:125 °C最低工作温度:-40 °C
输出特性:CONSTANT-CURRENT封装主体材料:PLASTIC/EPOXY
封装代码:HTSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
筛选级别:AEC-Q100座面最大高度:1.1 mm
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端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:4.4 mm

LM3421Q1MH 数据手册

 浏览型号LM3421Q1MH的Datasheet PDF文件第2页浏览型号LM3421Q1MH的Datasheet PDF文件第3页浏览型号LM3421Q1MH的Datasheet PDF文件第4页浏览型号LM3421Q1MH的Datasheet PDF文件第5页浏览型号LM3421Q1MH的Datasheet PDF文件第6页浏览型号LM3421Q1MH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  
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  

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