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功能与比较器件相同但引脚有所不同。
LM3409-Q1
- LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q100 Grade 1 Qualified
- 2-Ω, 1-A Peak MOSFET Gate Drive
- VIN Range: 6 V to 42 V (LM3409, LM3409-Q1)
- VIN Range: 6 V to 75 V (LM3409HV, LM3409HV-Q1)
- Differential, High-Side Current Sense
- Cycle-by-Cycle Current Limit
- No Control Loop Compensation Required
- 10,000:1 PWM Dimming Range
- 250:1 Analog Dimming Range
- Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
- Low-Power Shutdown and Thermal Shutdown
- Thermally Enhanced 10-Pin, HVSSOP Package
The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllers for step-down (buck) current regulators. They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function and a thermally enhanced 10-pin, HVSSOP package. These features combine to make the LM3409 family of devices ideal for use as constant current sources for driving LEDs where forward currents up to 5 A are easily achievable.
The LM3409 devices use constant off-time (COFT) control to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.
For all available packages, see the orderable addendum at the end of the data sheet.您可能感兴趣的相似产品
功能与比较器件相似。
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LM3409, -Q1, LM3409HV, -Q1 P-FET Buck Controller for High-Power LED Drivers 数据表 (Rev. L) | PDF | HTML | 2016-5-23 | ||
| 白皮书 | LED Drivers for Automotive Exterior Applications (Rev. B) | 2018-3-27 | ||||
| 应用手册 | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013-5-3 | ||||
| 用户指南 | AN-1954 LM3409 Demonstration Board (Rev. D) | 2013-5-1 | ||||
| 应用手册 | AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) | 2013-4-23 | ||||
| 应用手册 | Application Note 1953 LM3409HV Evaluation Board (cn) | 2009-11-20 | ||||
| 应用手册 | Application Note 1954 LM3409 Demonstration Board (cn) | 2009-11-20 | ||||
| 应用手册 | Dimming Techniques for Switched-Mode LED Drivers | 2009-7-30 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
LM3409EVAL — LM3409 演示板
This demonstration board showcases the LM3409 PFET controller for a buck current regulator. It is designed to drive 4 LEDs (VO = 15V) at a maximum average LED current (ILED = 1A) from a DC input voltage (VIN = 24V). The switching frequency (fSW = 525 kHz) is targeted for the nominal operating (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
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