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LM3402MRX

更新时间： 2024-01-22 04:28:19

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关光电二极管驱动
页数	文件大小	规格书
38页	1263K
描述
0.5A Constant Current Buck Regulator for Driving High Power LEDs

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数据手册

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LM3402MRX 数据手册

LM3402, LM3402HV

www.ti.com

SNVS450E –SEPTEMBER 2006–REVISED MAY 2013

0.5A Constant Current Buck Regulator for Driving High Power LEDs

Check for Samples: LM3402, LM3402HV

FEATURES

DESCRIPTION

The LM3402/02HV are monolithic switching

•

Integrated 0.5A N-channel MOSFET

V_INRange from 6V to 42V (LM3402)

V_INRange from 6V to 75V (LM3402HV)

500 mA Output Current Over Temperature

Cycle-by-Cycle Current Limit

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 735

mA (typical) for step-down (Buck) regulators.

Hysteretic control with controlled on-time coupled with

an external resistor allow the converter output voltage

to adjust as needed to deliver a constant current to

series and series - parallel connected arrays of LEDs

of varying number and type, LED dimming by pulse

width modulation (PWM), broken/open LED

protection, low-power shutdown and thermal

shutdown complete the feature set.

No Control Loop Compensation Required

Separate PWM Dimming and Low Power

Shutdown

•

Supports All-ceramic Output Capacitors and

Capacitor-less Outputs

•

Thermal Shutdown Protection

VSSOP, SO PowerPAD Packages

APPLICATIONS

•

LED Driver

Constant Current Source

Automotive Lighting

General Illumination

Industrial Lighting

Typical Application

VIN

BOOT

RON

LM3402/02HV

SNS

DIM

VCC

GND

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.

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.

12 3 4 5 6 7...38

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