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LR645 is a high input voltage, low output current linear regulator. It has a 3-terminal fixed output voltage version available in TO-92, TO-220 and SOT-89 packages, as well as an adjustable voltage version available in an 8-lead SOIC package. The 3-terminal version functions like any other low voltage 3-terminal regulator except it allows the use of much higher input voltages. When used in a SMPS start-up circuit, it eliminates the need for large power resistors. In this application, current is drawn from the high voltage line only during start-up. Only leakage current flows after start-up, thereby reducing the continuous power dissipation to a few milliwatts.The adjustable voltage version allows trimming of the output voltage from 8.0 to 12V. This version can also be connected to an external depletion mode MOSFET for increased output current. When used in conjunction withdepletion mode MOSFET DN2540N5, an output current of up to 150mA is achieved.
Accepts inputs from 15 to 450V
Output currents up to 3.0mA continuous, 30mA peak
Supply currenttypically 50μA
Line regulation typically 0.1mV/V
Output can be trimmed from 8.0 to 12V
Output current can be increased to 150mA with external FET
LR645 封裝圖
LR645 封裝圖
LR645 封裝圖
LR645 封裝圖
| 型號 | 制造商 | 描述 | 購買 |
|---|---|---|---|
| LR645N3-G-P013 | CAL-CHIP | 貼片電阻 0402 19.1KΩ ±1% 1/16W ±100ppm/℃ | 立即購買 |
| LR645N3-G-P003 | Omron Automation and Safety | 功率繼電器 8A SPDT 24VDC | 立即購買 |
| LR645N8-G | Knowles | 貼片電容（MLCC） 1812 150pF ±1% 100V C0G(NP0) | 立即購買 |
| LR645N5-G | Vishay | 插件電阻 - 20KΩ ±0.1% 1W ±25ppm/℃ | 立即購買 |
| LR645N3-G | Vishay | 插件電阻 - 45.2KΩ ±0.1% 1W ±25ppm/℃ | 立即購買 |
| LR645LG-G | Vishay | 插件電阻 - 39KΩ ±0.1% 1W ±25ppm/℃ | 立即購買 |
微芯正在就收購美高森美展開磋商。過去幾年，美高森美通過一波收購交易實現(xiàn)了增長，并表示希望在航天和防務(wù)領(lǐng)域?qū)崿F(xiàn)進一步擴張。
VFBOX協(xié)議轉(zhuǎn)換網(wǎng)關(guān)支持PLC，modbus，EthernetIP，Profinet，CCLink，EtherCAT，IEC61850，IEC104，bacnet，DLT645，HJ212，opc ua，opc da，DNP3。
5G智能物聯(lián)網(wǎng)關(guān)TG453，支持DLT645協(xié)議轉(zhuǎn)MODBUSRTU/MQTT協(xié)議，電表數(shù)據(jù)采集、傳輸，助力用戶快速接入物聯(lián)網(wǎng)平臺，適用于ModbusRTU與DLT645協(xié)議電表接入串口采集，支持
DL/T645協(xié)議不用深入研究，掌握這些就夠用了。
DL/T645協(xié)議瓶頸突破：瑞銀充電樁電表協(xié)議配置指南
DLT645有兩個版本分別是DLT645-97和DLT645-07，該協(xié)議主要用于電表抄表，采用為主-從結(jié)構(gòu)的半雙工通訊模式，硬件接口使用RS-485今天我們來看下，用遠創(chuàng)智控YC-645-TCP網(wǎng)關(guān)如何采集電表的數(shù)據(jù)
DLT645電表數(shù)據(jù)采集管理平臺 是基于中國電力行業(yè)標(biāo)準(zhǔn)協(xié)議（DL/T 645）開發(fā)的軟硬件一體化系統(tǒng)，核心功能是通過協(xié)議轉(zhuǎn)換與數(shù)據(jù)傳輸，實現(xiàn)電表數(shù)據(jù)的自動化采集、監(jiān)控、分析及遠程管理，為能源監(jiān)測
在激光加工設(shè)備領(lǐng)域，大族激光公司成為行業(yè)內(nèi)唯一入選國家工信部智能制造試點示范項目名單的企業(yè)，競爭力較強，業(yè)績增長明顯，2020年前三季度公司營業(yè)收入達88．59億元，同比增長27．58%。
| LV8112VB | LP8863-Q1 | LB11870 | LM148QML |
| LM2904-N | LC87F1M16A | LE25S40QE | LESDA6V1LT1G |
| LMV791-DIE | LC87F5M64A | LM5025 | LP2996A |
| LC898124EP2XC | LV52204MT | L297 | LM385-1.2-N |
| LC87F1HC8A | LB11668MC | LM5069 | LM358_XFCS |
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