LM3407
- Input Operating Range 4.5 V to 30 V
- Output Voltage Range: 0.1 VIN to 0.9 VIN
- Accurate Constant Current Output
- Independent Device Enable (CMOS Compatible) and PWM Dimming Control
- Converter Switching Frequency Adjustable From 300 kHz to 1 MHz
- No External Control Loop Compensation Required
- Supports Ceramic and Low ESR Output Capacitors
- Input Undervoltage Lockout (UVLO)
- Thermal Shutdown Protection
- MSOP-8 PowerPAD Package
The LM3407 device is a constant current output floating buck switching converter designed to provide constant current to high-power LEDs. The device is ideal for automotive, industrial, and general lighting applications. The LM3407 has an integrated power N-channel MOSFET that makes the application solution compact and simple to implement. An external 1% thick-film resistor allows the converter output voltage to adjust as needed to deliver constant current within 10% accuracy to a serially connected LED string of varying number and type. Converter switching frequency is adjustable from 300 kHz to 1 MHz. The LM3407 features a dimming input to enable LED brightness control by Pulse Width Modulation (PWM). Additionally, a separate enable pin allows for low-power shutdown. An exposed pad MSOP-8 package provides excellent heat dissipation and thermal performance. Input UVLO and output open-circuit protection ensure a robust LED driver solution.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM3407 350-mA, Constant Current Output Floating Buck Switching Converter for High-Power LEDs datasheet (Rev. C) | PDF | HTML | 2016年 11月 15日 |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020年 9月 21日 | ||
| User guide | LM3407 Component Calculator (Rev. A) | 2016年 5月 23日 | ||
| Application note | AN-1656 Design Challenges of Switching LED Drivers (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 | ||
| EVM User's guide | AN-1763 LM3407 Evaluation Board Reference Design (Rev. A) | 2009年 1月 21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)。
LM3407EVAL — 350mA 恆定電流輸出浮動降壓開關穩壓器評估板
The LM3407 evaluation board contains a Pulse-Width-Modulation (PWM) floating buck converter with an integrated N-Channel power MOSFET and is designed to provide a constant current output for driving high power LEDs, such as the Lumileds Luxeon® power LEDs and OSRAM Golden DRAGON® LED.
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGN) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。