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LM3423-Q1

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具有串聯(lián) DIM FET 驅(qū)動器和故障標(biāo)志的汽車類 N 溝道恒流 LED 控制器

產(chǎn)品詳情

Number of channels 1 Topology Boost Controller, Buck-Boost Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 150 Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (min) (V) 3 Vout (max) (V) 72 Iout (max) (A) 5 Iq (typ) (mA) 2 Switching frequency (max) (kHz) 2000 Features Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown
Number of channels 1 Topology Boost Controller, Buck-Boost Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 150 Vin (min) (V) 4.5 Vin (max) (V) 75 Vout (min) (V) 3 Vout (max) (V) 72 Iout (max) (A) 5 Iq (typ) (mA) 2 Switching frequency (max) (kHz) 2000 Features Adjustable Switch Frequency, Enable/Shutdown, Thermal shutdown
HTSSOP (PWP) 20 41.6 mm2 6.5 x 6.4
  • AEC Qualified for Automotive Applications
    • Device Temperature Grade 1: ?40°C ≤ TA ≤ 125°C (LM3421-Q1 and LM3423-Q1)
    • Device Temperature Grade 0: ?40°C ≤ TA ≤ 150°C (LM3421-Q0 and LM3423-Q0)
  • VIN Range From 4.5 V to 75 V
  • High-Side Adjustable Current Sense
  • 2-?, 1-A Peak MOSFET Gate Driver
  • Input Undervoltage and Output Overvoltage Protection
  • PWM and Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Zero Current Shutdown and Thermal Shutdown
  • LED Output Status Flag (LM3423-Q1 and LM3423-Q0 Only)
  • Fault Status Flag and Timer(LM3423-Q1 and LM3423-Q0 Only)
  • AEC Qualified for Automotive Applications
    • Device Temperature Grade 1: ?40°C ≤ TA ≤ 125°C (LM3421-Q1 and LM3423-Q1)
    • Device Temperature Grade 0: ?40°C ≤ TA ≤ 150°C (LM3421-Q0 and LM3423-Q0)
  • VIN Range From 4.5 V to 75 V
  • High-Side Adjustable Current Sense
  • 2-?, 1-A Peak MOSFET Gate Driver
  • Input Undervoltage and Output Overvoltage Protection
  • PWM and Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Zero Current Shutdown and Thermal Shutdown
  • LED Output Status Flag (LM3423-Q1 and LM3423-Q0 Only)
  • Fault Status Flag and Timer(LM3423-Q1 and LM3423-Q0 Only)

The LM3421-Q1 and LM3423-Q1 family of devices 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 flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421-Q1 and LM3423-Q1 devices use 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.

The LM3421-Q1 and LM3423-Q1 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.

The LM3421-Q1 and LM3423-Q1 family of devices 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 flexibility, along with an input voltage rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3421-Q1 and LM3423-Q1 devices use 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.

The LM3421-Q1 and LM3423-Q1 devices include a high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions.
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技術(shù)文檔

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類型 標(biāo)題 下載最新的英語版本 日期
* 數(shù)據(jù)表 LM342x-Q1 N -Channel Controllers for Constant-Current LED Drivers 數(shù)據(jù)表 PDF | HTML 2019年 7月 30日
白皮書 LED Drivers for Automotive Exterior Applications (Rev. B) 2018年 3月 27日
技術(shù)文章 Lighting the road ahead: LEDs in automotive front lighting PDF | HTML 2016年 9月 29日
應(yīng)用手冊 AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日
EVM 用戶指南 AN-2010 LM3423 Buck-Boost 2 Layer Evaluation Board (Rev. C) 2013年 5月 3日
EVM 用戶指南 AN-2011 LM3423 Boost 2 Layer Evaluation Board (Rev. A) 2013年 5月 3日
EVM 用戶指南 AN-1872 LM3423 Boost Evaluation Board (Rev. B) 2013年 5月 1日
EVM 用戶指南 AN-1907 LM3423 Buck-Boost Configuration Evaluation Board (Rev. A) 2013年 5月 1日
應(yīng)用手冊 AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 2013年 4月 23日
用戶指南 Ambient Light Adaptive LED Driver User Guide 2012年 1月 27日
應(yīng)用手冊 Application Note 1656 Design Challenges of Switching LED Drivers (cn) 最新英語版本 (Rev.A) 2007年 10月 18日

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仿真模型

LM3423 PSpice Transient Model (Rev. A)

SNVMA70A.ZIP (124 KB) - PSpice Model
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CAD/CAE 符號

Ambient Light Adaptive LED Driver CAD Files

SNVC025.ZIP (123 KB)
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