LM385-ADJ
- Adjustable from 1.24V to 5.30V
- Operating Current of 10μA to 20mA
- 1% and 2% Initial Tolerance
- 1Ω Dynamic Impedance
- Low Temperature Coefficient
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The LM185/LM285/LM385 are micropower 3-terminal adjustable band-gap voltage reference diodes. Operating from 1.24 to 5.3V and over a 10μA to 20mA current range, they feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185 band-gap reference uses only transistors and resistors, low noise and good long-term stability result.
Careful design of the LM185 has made the device tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation.
The extremely low power drain of the LM185 makes it useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further, the wide operating current allows it to replace older references with a tighter tolerance part.
The LM185 is rated for operation over a −55°C to 125°C temperature range, while the LM285 is rated −40°C to 85°C and the LM385 0°C to 70°C. The LM185 is available in a hermetic TO package and a LCCC package, while the LM285/LM385 are available in a low-cost TO-92 package, as well as SOIC.
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 | LM185/LM285/LM385 Adjustable Micropower Voltage References 数据表 (Rev. F) | 2013-4-5 | |||
| 电子书 | 电压监测仪和电压检测器：提示、技巧和基础知识 | 英语版 | 2019-8-28 | |||
| 应用手册 | AN-715 LM385 Feedback Provides Regulator Isolation (Rev. A) | 2013-5-6 | ||||
| 应用手册 | AN-777 LM2577 Three Output, Isolated Flyback Regulator (Rev. B) | 2013-4-23 | ||||
| 应用手册 | AN-284 Single-Supply Applications of CMOS MICRODACs (Rev. B) | 2013-4-22 | ||||
| 应用手册 | TO-92 Packing Options / Ordering Instructions (Rev. A) | 2010-6-23 | ||||
| 应用手册 | Negative Buck Switching Regulator (using LM258x) | 2007-3-21 |
设计与开发
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SHUNT_VOLTAGE_REFERENCE_RESISTOR_CALCULATOR — Shunt Voltage Reference External Resistor Quick Start Calculator
该外部电阻器快速入门计算器工具支持您根据电压基准、电源和负载电流限值轻松计算有效的外部电阻值。根据这些输入，您可以马上查看计算结果并通过以颜色标记的指示了解计算出的输出是否有效。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TO-92 (LP) | 3 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |