The LM3424 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 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 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 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 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.

• 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 soft-start and slope compensation
• Programmable, synchronizable switching frequency
• Programmable thermal foldback
• Precision voltage reference
• Low-power shutdown and thermal shutdown

• Input voltage (type)
• DC/DC
• Topology
• Boost, Boost Controller, Buck-Boost, Sepic
• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 75
• Iout (Max) (A)
• 5
• Iq (Typ) (mA)
• 2
• Features
• Adjustable Switch Frequency, Enable/Shutdown, Power Good, Soft Start, Synchronization Pin, Thermal Shutdown
• Operating temperature range (C)
• -40 to 125
• Dimming method
• Analog, PWM

LM3424的完整型号有：LM3424MH/NOPB、LM3424MHX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM3424MH/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-20，包装数量MPQ：73个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM3424MH/NOPB的批量USD价格：1.561（1000+）

LM3424MHX/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-20，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM3424MHX/NOPB的批量USD价格：1.301（1000+）

LM3424BKBSTEVAL — LM3424 降压升压评估板

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 (...)

LM3424BSTEVAL — LM3424 升压评估板

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, (...)

LM3424 PSpice Transient Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)