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LM3406

更新时间: 2024-11-22 11:14:55
品牌 Logo 应用领域
德州仪器 - TI 驱动驱动器
页数 文件大小 规格书
41页 1408K
描述
42V 1.5A 恒流降压型 LED 驱动器

LM3406 数据手册

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LM3406, LM3406HV, LM3406HV-Q1  
SNVS512E SEPTEMBER 2008REVISED MARCH 2014  
LM3406 1.5-A, Constant Current, Buck Regulator for Driving High Power LEDs  
1 FEATURES  
3 DESCRIPTION  
The LM3406 family are monolithic switching  
regulators designed to deliver constant currents to  
high power LEDs. Ideal for automotive, industrial, and  
general lighting applications, they contain a high-side  
N-channel MOSFET switch with a current limit of  
2.0A (typical) for step-down (Buck) regulators.  
Controlled on-time with true average current and an  
external current sense resistor allow the converter  
output voltage to adjust as needed to deliver a  
constant current to series and series-parallel  
connected LED arrays of varying number and type.  
LED dimming via pulse width modulation (PWM) is  
achieved using a dedicated logic pin or by PWM of  
the power input voltage. The product feature set is  
rounded out with low-power shutdown and thermal  
shutdown protection.  
1
LM3406HV-Q1  
Automotive Grade Device  
AEC-Q100 Grade 1 Qualified  
Operating Ambient Temperature: –40°C to  
125°C  
Integrated 2.0A MOSFET  
VIN Range 6V to 42V (LM3406)  
VIN Range 6V to 75V (LM3406HV)  
VIN Range 6V to 75V (LM3406HV-Q1)  
True Average Output Current Control  
1.7A Minimum Output Current Limit Over  
Temperature  
Cycle-by-Cycle Current Limit  
The LM3406HV-Q1 is AEC-Q100 grade 1 qualified.  
PWM Dimming with Dedicated Logic Input  
PWM Dimming with Power Input Voltage  
Simple Control Loop Compensation  
Low Power Shutdown  
Supports All-Ceramic Output Capacitors and  
Capacitor-less Outputs  
Thermal Shutdown Protection  
TSSOP-14 Package  
2 APPLICATIONS  
LED Driver  
Constant Current Source  
Automotive Lighting  
General Illumination  
Industrial Lighting  
3.1 TYPICAL APPLICATION  
C
B
VIN  
L1  
VIN,VINS  
RON  
BOOT  
SW  
R
ON  
C
IN  
D1  
IF  
LM3406/06HV  
VOUT  
DIM  
CS  
R
SNS  
COMP  
VCC  
GND  
C
C
F
C
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 

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