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LM3424-Q1

現行

具熱折返且適用驅動 LED 的車用定電流 N 通道控制器

產品詳細資料

Number of channels 1 Topology Boost Controller, Buck-Boost Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 125 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, Power good, Soft Start, Synchronization Pin, Thermal shutdown
Number of channels 1 Topology Boost Controller, Buck-Boost Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 125 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, Power good, Soft Start, Synchronization Pin, 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
  • VIN range from 4.5 V to 75 V
  • High-side adjustable current sense
  • 2-Ω, 1-A peak MOSFET gate driver
  • Input undervoltage and output overvoltage protection
  • PWM and analog dimming
  • Cycle-by-cycle current limit
  • Programmable soft-start and slope compensation
  • Programmable, synchronizable switching frequency
  • Programmable thermal foldback
  • Precision voltage reference
  • Low-power shutdown and thermal shutdown
  • AEC Qualified for automotive applications
    • Device temperature grade 1: −40°C ≤ TA ≤ 125°C
  • VIN range from 4.5 V to 75 V
  • High-side adjustable current sense
  • 2-Ω, 1-A peak MOSFET gate driver
  • Input undervoltage and output overvoltage protection
  • PWM and analog dimming
  • Cycle-by-cycle current limit
  • Programmable soft-start and slope compensation
  • Programmable, synchronizable switching frequency
  • Programmable thermal foldback
  • Precision voltage reference
  • Low-power shutdown and thermal shutdown

The LM3424-Q1 is a versatile high voltage N-channel MOSFET controller for LED drivers. It can be easily configured in buck, boost, buck-boost and SEPIC topologies. In addition, the LM3424-Q1 includes a thermal foldback feature for temperature management of the LEDs. This flexibility, along with an input voltage rating of 75 V, makes the LM3424-Q1 ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense allows for tight regulation of the LED current with the highest efficiency possible. The LM3424-Q1 uses standard peak current-mode control providing inherent input voltage feed-forward compensation for better noise immunity. It is designed to provide accurate thermal foldback with a programmable foldback breakpoint and slope. In addition, a 2.45V reference is provided.

The LM3424-Q1 includes a high-voltage startup 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 2.0 MHz and external synchronization is possible. The controller is capable of high speed PWM dimming and analog dimming.

The LM3424-Q1 is a versatile high voltage N-channel MOSFET controller for LED drivers. It can be easily configured in buck, boost, buck-boost and SEPIC topologies. In addition, the LM3424-Q1 includes a thermal foldback feature for temperature management of the LEDs. This flexibility, along with an input voltage rating of 75 V, makes the LM3424-Q1 ideal for illuminating LEDs in a large family of applications.

Adjustable high-side current sense allows for tight regulation of the LED current with the highest efficiency possible. The LM3424-Q1 uses standard peak current-mode control providing inherent input voltage feed-forward compensation for better noise immunity. It is designed to provide accurate thermal foldback with a programmable foldback breakpoint and slope. In addition, a 2.45V reference is provided.

The LM3424-Q1 includes a high-voltage startup 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 2.0 MHz and external synchronization is possible. The controller is capable of high speed PWM dimming and analog dimming.

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類型 標題 日期
* Data sheet LM3424-Q1 Constant Current N-channel Controller with Thermal Foldback For Driving LEDs datasheet PDF | HTML 2019年 7月 31日
White paper LED Drivers for Automotive Exterior Applications (Rev. B) 2018年 3月 27日
Technical article Lighting the road ahead: LEDs in automotive front lighting PDF | HTML 2016年 9月 29日
Application note AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日
EVM User's guide AN-1967 LM3424 Buck-Boost Evaluation Board (Rev. A) 2013年 5月 3日
EVM User's guide AN-1969 LM3424 Boost Evaluation Board (Rev. A) 2013年 5月 3日
Application note AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 2013年 4月 23日
User guide Ambient Light Adaptive LED Driver User Guide 2012年 1月 27日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM3424BKBSTEVAL — LM3424 降壓-升壓評估板

This wide range evaluation board showcases the LM3424 NFET controller used with a buck-boost current regulator. It is designed to drive 4 to 10 LEDs at a maximum average LED current of 1A from a DC input voltage of 10 to 70V. The evaluation board showcases many of the LM3424 features including (...)

使用指南: PDF
TI.com 無法提供
開發板

LM3424BSTEVAL — LM3424 升壓評估板

This evaluation board showcases the LM3424 NFET controller used with a boost current regulator. It is designed to drive 9 to 12 LEDs at a maximum average LED current of 1A from a DC input voltage of 10 to 26V. The evaluation board showcases many of the LM3424 features including thermal foldback, (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LM3424 PSpice Transient Model

SNVMA72.ZIP (102 KB) - PSpice Model
CAD/CAE 符號

Ambient Light Adaptive LED Driver CAD Files

SNVC025.ZIP (123 KB)
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTSSOP (PWP) 20 Ultra Librarian

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