LP2954
- 5-V Output within 1.2% Over Temperature
(A Grade) - Adjustable 1.23-V to 29-V Output Voltage Available (LP2954IM and LP2954AIM)
- Ensured 250-mA Output Current
- Extremely Low Quiescent Current
- Low Dropout Voltage
- Reverse Battery Protection
- Extremely Tight Line and Load Regulation
- Very Low Temperature Coefficient
- Current and Thermal Limiting
- Pin Compatible with LM2940 and LM340
(5-V Version Only) - Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown
The LP2954 is a 5-V micropower LDO with very low quiescent current (90 μA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250-mA load current).
The quiescent current increases only slightly at dropout (120 μA typical), which prolongs battery life.
The LP2954 with a fixed 5-V output is available in three-pin TO-220 and DDPAK/TO-263 packages. The adjustable LP2954 is provided in an 8-pin, small-outline SOIC package. The adjustable version also provides a resistor network which can be pin strapped to set the output to any voltage from to 1.23 V to 29 V.
Reverse battery protection is provided for the IN pin.
The tight line and load regulation (0.04% typical), as well as very low output temperature coefficient make the LP2954 well suited for use as a low-power voltage reference.
Output accuracy is ensured at both room temperature and over the entire operating temperature range.
For all available packages, see the orderable addendum at the end of the data sheet.技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LP2954, LP2954A 5-V and Adjustable Micropower LDOs 数据表 (Rev. E) | PDF | HTML | 2016-7-28 | ||
| 应用手册 | AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) | 2013-4-23 | ||||
| 应用手册 | Linear and Switching Voltage Regulator Fundamental Part 1 | 2007-3-21 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TIDA-00202 — HIPERFACE 位置编码器接口参考设计
TIDA-00202 参考设计实现了一款符合 EMC 标准的工业级混合模拟与数字接口，可连接至 HIPERFACE 位置编码器。双向参数通道采用带 IEC-ESD 和 IEC-EFT 防护功能的 3.3V 供电 RS485 收发器。对于模拟正弦/余弦信号通道，设计提供两种方案以提升连接灵活性：既适用于内置 ADC 的处理器，也适用于无内置 ADC 的处理器；同时使用两种方案还可实现冗余功能。第一种方案采用带 SPI 输出的全差分双路 12 位 ADC，第二种方案采用带单端模拟输出 (0-3.3V) 的双路差分输入。该设计具备符合工业标准的 24V 输入，电压宽范围为 16V 至 (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TO-220 (NDE) | 3 | Ultra Librarian |
| TO-263 (KTT) | 3 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
订购和质量
推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。