The LM3429 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. This flexibility, along with an input voltage rating of 75V, makes the LM3429 ideal for illuminating LEDs in a very diverse, large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3429 uses 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 LM3429 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 MHz, thus enabling compact solutions. Additional features include analog dimming, PWM dimming, overvoltage protection, undervoltage lock-out, cycle-by-cycle current limit, and thermal shutdown.

• LM3429-Q1 is AEC-Q100 Grade 1 Qualified for Automotive Applications
• VIN Range From 4.5 V to 75 V
• Adjustable Current Sense Voltage
• High-Side Current Sensing
• 2-Ω, 1-A Peak MosFET Gate Driver
• Input Undervoltage Protection
• Overvoltage Protection
• PWM Dimming
• Analog Dimming
• Cycle-by-Cycle Current Limit
• Programmable Switching Frequency
• Low Profile 14-lead HTSSOP Package
• 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)
• 1.6
• Switching frequency (Max) (kHz)
• 2000
• Features
• Adjustable Switch Frequency, Enable/Shutdown, Thermal Shutdown

LM3429-Q1的完整型号有：LM3429Q1MH/NOPB、LM3429Q1MHX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM3429Q1MH/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-14，包装数量MPQ：94个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：Call TI，TI官网LM3429Q1MH/NOPB的批量USD价格：1.716（1000+）

LM3429Q1MHX/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-14，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：Call TI，TI官网LM3429Q1MHX/NOPB的批量USD价格：1.43（1000+）

LM3429BKBSTEVAL — LM3429 - N 通道控制器 LED 驱动器降压/升压评估板

This wide range evaluation board showcases the LM3429 NFET controller used with a buck-boost current regulator. It is designed to drive 4 to 8 LEDs at a maximum average LED current of 1A from a DC input voltage of 10 to 70V.

The evaluation board showcases most features of the LM3429 including PWM (...)

LM3429BSTEVAL — LM3429 - N 通道控制器 LED 驱动器升压评估板

This evaluation board showcases the LM3429 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 most features of the LM3429 including PWM dimming, (...)

LM3429 PSpice Transient Model (Rev. C)

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 (...)