可提供此產(chǎn)品的更新版本
功能與比較器件相同，但引腳排列有所不同
LM3485-Q1
- Easy-to-Use Control Methodology
- No Control-Loop Compensation Required
- 4.5-V to 35-V Wide Input Range
- 1.242-V to VIN Adjustable Output Range
- High Efficiency 93%
- ±1.3% (±2% Over Temp) Internal Reference
- 100% Duty Cycle
- Maximum Operating Frequency > 1 MHz
- Current Limit Protection
The LM3485 is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, low-cost, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control-loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultralow dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple.
Current limit protection is provided by measuring the voltage across the RDS(ON) of the PFET, thus eliminating the need for a sense resistor. The cycle-by-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.
技術(shù)文檔
| 頂層文檔 | 類型 | 標(biāo)題 | 格式選項(xiàng) | 下載最新的英語(yǔ)版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 數(shù)據(jù)表 | LM3485 Hysteretic PFET Buck Controller 數(shù)據(jù)表 (Rev. H) | PDF | HTML | 2015年 12月 28日 | ||
| 應(yīng)用手冊(cè) | Application Note 1392 LM3485 LED Demo Board (cn) | 2006年 6月 7日 |
設(shè)計(jì)與開發(fā)
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LM3485LED-EVAL — 滯后 PFET 降壓控制器
The LM3485 LED driver board is a buck regulator derived controlled current source designed to drive high power, high brightness LEDs (HBLEDs) such as the Luxeon? Emitter at dissipations of 1W to 5W. The board can accept an input voltage ranging from 5V to 30V and can control the output current (...)
| 封裝 | 引腳 | CAD 符號(hào)、封裝和 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
訂購(gòu)和質(zhì)量
- RoHS
- REACH
- 器件標(biāo)識(shí)
- 引腳鍍層/焊球材料
- MSL 等級(jí)/回流焊峰值溫度
- MTBF/時(shí)基故障估算
- 材料成分
- 鑒定摘要
- 持續(xù)可靠性監(jiān)測(cè)
- 制造廠地點(diǎn)
- 封裝廠地點(diǎn)
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