LP2951-N
- Input Voltage Range: 2.3 V to 30 V
- 5-V, 3-V, and 3.3-V Output Voltage Versions Available
- High Accuracy Output Voltage
- Ensured 100-mA Output Current
- Extremely Low Quiescent Current
- Low Dropout Voltage
- Extremely Tight Load and Line Regulation
- Very Low Temperature Coefficient
- Use as Regulator or Reference
- Needs Minimum Capacitance for Stability
- Current and Thermal Limiting
- Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
- LP2951-N Versions Only:
- Error Flag Warns of Output Dropout
- Logic-Controlled Electronic Shutdown
- Output Programmable From 1.24 V to 29 V
The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.
Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.
One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.
The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.
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技术文档
| 类型 | 标题 | 下载最新的英语版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 数据表 | LP295x-N Series of Adjustable Micropower Voltage Regulators 数据表 (Rev. Q) | PDF | HTML | 2017年 12月 8日 | ||
| EVM 用户指南 | LP2951 EVM User's Guide (Rev. A) | 2018年 1月 5日 | ||||
| 应用手册 | AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) | 2013年 4月 23日 | ||||
| 更多文献资料 | Die D/S LP2951 MDS Series of Adjustable Micropower Voltage Regs | 2012年 12月 20日 | ||||
| 更多文献资料 | Die D/S LP2951C MWC Series Of Adj Micropower Voltage Regulators | 2012年 9月 28日 | ||||
| 应用手册 | Low-Voltage Current Loop Transmitter | 2007年 8月 2日 | ||||
| 应用手册 | Battery Charging | 2007年 3月 21日 | ||||
| 应用手册 | Linear and Switching Voltage Regulator Fundamental Part 1 | 2007年 3月 21日 | ||||
| 白皮书 | Versatility of the LM5030 PWM Push-Pull Controller | 2003年 12月 1日 |
设计和开发
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| PDIP (P) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
| WSON (NGT) | 8 | Ultra Librarian |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点
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