LM3424-Q1
- 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.
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功能与比较器件相同，但引脚排列有所不同
技术文档
| 类型 | 标题 | 下载最新的英语版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 数据表 | LM3424-Q1 Constant Current N-channel Controller with Thermal Foldback For Driving LEDs 数据表 | PDF | HTML | 2019年 7月 31日 | ||
| 白皮书 | LED Drivers for Automotive Exterior Applications (Rev. B) | 2018年 3月 27日 | ||||
| 技术文章 | Lighting the road ahead: LEDs in automotive front lighting | PDF | HTML | 2016年 9月 29日 | |||
| 应用手册 | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013年 5月 3日 | ||||
| EVM 用户指南 | AN-1967 LM3424 Buck-Boost Evaluation Board (Rev. A) | 2013年 5月 3日 | ||||
| EVM 用户指南 | AN-1969 LM3424 Boost Evaluation Board (Rev. A) | 2013年 5月 3日 | ||||
| 应用手册 | AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) | 2013年 4月 23日 | ||||
| 用户指南 | Ambient Light Adaptive LED Driver User Guide | 2012年 1月 27日 | ||||
| 应用手册 | Application Note 1656 Design Challenges of Switching LED Drivers (cn) | 最新英语版本 (Rev.A) | 2007年 10月 18日 |
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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 (...)
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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, (...)
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |
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