LM1086
- Available in Fixed 1.8-V, 2.5-V, 3.3-V, 5-V
- Available in Adjustable Version
- Current Limiting and Thermal Protection
- 2% Output Accuracy
- Output Current 1.5 A
- Line Regulation 0.015% (Typical)
- Load Regulation 0.1% (Typical)
- Maximum Input Voltage up to 29V
- Minimum Adjustable Output Voltage Down to 1.25V
- Stable with Ceramic Output Capacitor with ESR
- Temperature Range : -40°C to 125°C
The LM1086 is a regulator with a maximum dropout of 1.5 V at 1.5 A of load current. The device has the same pin-out as TI’s industry standard LM317.
Two resistors are required to set the output voltage of the adjustable output voltage version of the LM1086. Fixed output voltage versions integrate the adjust resistors. Typically, no input capacitor is needed unless the device is situated more than 6 inches from the input filter capacitors. Output capacitor can be replaced with ceramic and appropriate ESR.
The LM1086 circuit includes a zener trimmed bandgap reference, current limiting, and thermal shutdown. Because the LM1086 regulator is floating and detects only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded. Exceeding the maximum input-to-output deferential will result in short-circuiting the output. By connecting a fixed resistor between the adjustment pin and output, the LM1086 can be also used as a precision current regulator.
For applications requiring greater output current, refer to LM1084 (clickable link) for the 5-A version, and the LM1085 (clickable link) for the 3-A version.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM1086 1.5-A Low Dropout Positive Voltage Regulators datasheet (Rev. J) | PDF | HTML | 2015/4/23 | ||
| 應用說明 | A Topical Index of TI LDO Application Notes (Rev. F) | 2019/6/27 | ||||
| 應用說明 | LDO PSRR Measurement Simplified (Rev. A) | PDF | HTML | 2017/8/9 | |||
| 技術文章 | Create a simple LED driver | PDF | HTML | 2015/10/20 | |||
| 應用說明 | Linear power for automated industrial systems | 2015/1/9 | ||||
| 應用說明 | AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) | 2013/5/6 | ||||
| 應用說明 | AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) | 2013/5/6 | ||||
| 應用說明 | Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) | 2013/5/5 | ||||
| 應用說明 | Packaging Limits Range of Linear Regulators | 2010/5/8 | ||||
| 應用說明 | Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) | 2008/6/4 | ||||
| 應用說明 | Understanding the Terms and Definitions of LDO Voltage Regulators | 1999/10/21 |
設計與開發
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