LM5008
- Operating Input Voltage Range: 6 V to 95 V
- Integrated 100-V, N-Channel Buck Switch
- Internal VCC Regulator
- No Loop Compensation Required
- Ultra-Fast Transient Response
- On-Time Varies Inversely With Line Voltage
- Operating Frequency Remains Constant With Varying Line Voltage and Load Current
- Adjustable Output Voltage
- Highly Efficient Operation
- Precision Internal Reference
- Low Bias Current
- Intelligent Current Limit Protection
- Thermal Shutdown
- 8-Pin VSSOP and WSON Packages
- Create a Custom Design Using the LM5008 With the WEBENCH® Power Designer
The LM5008 350-mA step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 100-V N-channel buck switch and operates over an input voltage range of 9 V to 95 V. The device is easy to implement and is provided in the 8-pin VSSOP and the thermally enhanced 8-pin WSON packages. The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The hysteretic control requires no loop compensation. An intelligent current limit is implemented with forced off-time, which is inversely proportional to VOUT. This scheme ensures short-circuit protection while providing minimum foldback. Other protection features include: thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout, and maximum duty cycle limiter.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM5008 95-V, 350-mA, Constant On-Time DC/DC Buck Switching Regulator datasheet (Rev. I) | PDF | HTML | 2018年 10月 11日 |
| Application note | Stability Analysis and Design of COT Type-3 Ripple Circuit | 2019年 3月 20日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| White paper | Wide VIN power management ICs simplify white paper (Rev. A) | 2013年 9月 19日 | ||
| EVM User's guide | AN-1330 LM5008 Evaluation Board (Rev. B) | 2013年 4月 30日 | ||
| EVM User's guide | AN-1925 LM5008A Evaluation Board (Rev. C) | 2013年 4月 30日 | ||
| Application note | Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B) | 2013年 4月 30日 | ||
| Application note | Boot Capacitor Regulation in LM25007 Constant-On-Time (COT) Converter (Rev. A) | 2013年 4月 23日 | ||
| Application note | Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) | 2013年 4月 23日 |
設計與開發
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LM5008EVAL — 100V 廣泛 Vin 降壓式切換穩壓器評估模組
LM5008 High Voltage (100V) Step Down Switching Regulator
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| WSON (NGU) | 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