現在提供此產品的更新版本
功能與所比較的裝置相似
LM2854
- Input Voltage Range of 2.95 V to 5.5 V
- Maximum Load Current of 4 A
- Wide Bandwidth Voltage Mode Control Loop, Partial Internal Compensation
- Fixed Switching Frequency of 500 kHz or 1 MHz
- 35-mΩ Integrated MOSFET Switches
- Adjustable Output Voltage Down to 0.8 V
- Optimized Reference Voltage Initial Accuracy and Temperature Drift
- External Soft-Start Control With Tracking Capability
- Enable Pin With Hysteresis
- Low Standby Current of 230 µA
- Pre-Biased Load Start-up Capability
- Integrated UVLO, OCP, and Thermal Shutdown
- 100% Duty Cycle Capability
- HTSSOP-16 Exposed Pad Package
The LM2854 PowerWise™ buck regulator is a 500-kHz or 1-MHz step-down switching voltage regulator capable of driving up to a 4-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LM2854 can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable and highly accurate output voltage as low as 0.8 V. Externally established soft-start with a small capacitor facilitates controlled start-up, and the LM2854 is capable of starting gracefully into a pre-biased output voltage. Partial internal compensation reduces the number of external passive components and PC board space typically necessary in a voltage mode buck converter application, yet preserving flexibility to deal with ceramic and/or electrolytic based load capacitors. Lossless cycle-by-cycle peak current limit is used to protect the load from an overcurrent or short-circuit fault, and an enable comparator simplifies sequencing applications. The LM2854 is available in an exposed pad HTSSOP-16 package that enhances the thermal performance of the regulator.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM2854 4-A 500-kHz / 1-MHz Synchronous Buck Regulator datasheet (Rev. E) | PDF | HTML | 2017年 10月 4日 |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| EVM User's guide | AN-1786 LM2854 500 kHz Buck Regulator Evaluation Board (Rev. B) | 2013年 5月 1日 | ||
| EVM User's guide | AN-1880 LM2854 1MHz Buck Regulator Demo Board (Rev. B) | 2013年 5月 1日 | ||
| Application note | AN-1197 Selecting Inductors for Buck Converters (Rev. B) | 2013年 4月 23日 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | 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