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LM3409HV-Q1

更新时间： 2024-10-03 11:07:55
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德州仪器 - TI 驱动控制器显示驱动器驱动程序和接口
页数 文件大小 规格书
43页 1782K
描述
用于高功率 LED 驱动器的 75V 汽车类 PFET 降压控制器

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LM3409HV-Q1 数据手册

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LM3409, LM3409HV, LM3409-Q1  
www.ti.com  
SNVS602J –MARCH 2009–REVISED MAY 2013  
PFET Buck Controller for High Power LED Drivers  
Check for Samples: LM3409, LM3409HV, LM3409-Q1  
1
FEATURES  
DESCRIPTION  
The LM3409/09N/09HV/09Q/09QHV are P-channel  
2
•
LM3409Q/LM3409QHV is an Automotive Grade  
Product That is AEC-Q100 Grade 1 Qualified  
MosFET (PFET) controllers for step-down (buck)  
current regulators. They offer wide input voltage  
range, high-side differential current sense with low  
adjustable threshold voltage and fast output  
enable/disable function and a thermally enhanced  
VSSOP-10 package. These features combine to  
make the LM3409 family of devices ideal for use as  
constant current sources for driving LEDs where  
forward currents up to 5A are easily achievable.  
•
•
2Ω, 1A Peak MosFET Gate Drive  
VIN Range: 6V to 42V  
(LM3409/LM3409Q/LM3409N)  
•
•
•
•
•
•
•
VIN Range: 6V to 75V (LM3409HV/LM3409QHV)  
Differential, High-side Current Sense  
Cycle-by-Cycle Current Limit  
No Control Loop Compensation Required  
10,000:1 PWM Dimming Range  
The LM3409 devices use Constant Off-Time (COFT)  
control to regulate an accurate constant current  
without the need for external control loop  
compensation. Analog and PWM dimming are easy to  
implement and result in a highly linear dimming range  
250:1 Analog Dimming Range  
Supports All-Ceramic Output Capacitors and  
Capacitor-less Outputs  
with  
excellent  
achievable  
contrast  
ratios.  
Programmable UVLO, low-power shutdown, and  
thermal shutdown complete the feature set.  
•
•
•
Low Power Shutdown and Thermal Shutdown  
Thermally Enhanced VSSOP-10 Package  
Dual Inline Package (LM3409N)  
The LM3409/09Q/09N have an operational input  
voltage range up to 42V, while the LM3409HV/QHV  
are high voltage options with an input voltage range  
up to 75V. The LM3409/09HV/09Q/09QHV come in a  
thermally enhanced 10-lead VSSOP package, while  
the LM3409N comes in a 14-lead PDIP package. The  
APPLICATIONS  
•
•
•
•
LED Driver  
Constant Current Source  
Automotive Lighting  
General Illumination  
LM3409Q/LM3409QHV  
are  
automotive  
grade  
products that are AEC-Q100 grade 1 qualified.  
Typical Application  
R
UV2  
R
UV1  
1
2
3
4
5
10  
UVLO  
IADJ  
EN  
VIN  
VIN  
C
F
C
IN  
9
8
7
6
VCC  
CSP  
LM3409/HV  
R
SNS  
R
OFF  
COFF  
GND  
CSN  
C
OFF  
DAP  
PGATE  
Q1  
L1  
VO  
ILED  
D1  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009–2013, Texas Instruments Incorporated  
 
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