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LR645LG-G PDF预览

LR645LG-G

更新时间: 2024-10-29 21:11:39
品牌 Logo 应用领域
美国微芯 - MICROCHIP 光电二极管输出元件调节器
页数 文件大小 规格书
16页 971K
描述
8 V-12V ADJUSTABLE POSITIVE REGULATOR, PDSO8

LR645LG-G 技术参数

是否Rohs认证: 符合生命周期:Active
包装说明:4.90 X 3.90 MM, 1.75 MM HEIGHT, 1.27 MM PITCH, MS-012AA, GREEN, SOIC-8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:1.19可调性:ADJUSTABLE
标称回动电压 1:7 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e3长度:4.9 mm
最大负载调整率 (%):5%湿度敏感等级:1
功能数量:1输出次数:1
端子数量:8工作温度TJ-Max:125 °C
工作温度TJ-Min:-40 °C最大输出电流 1:0.15 A
最大输出电压 1:12 V最小输出电压 1:8 V
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified调节器类型:ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR
座面最大高度:1.75 mm子类别:Other Regulators
表面贴装:YES端子面层:Matte Tin (Sn) - annealed
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:3.9 mmBase Number Matches:1

LR645LG-G 数据手册

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LR645  
High-Input Voltage SMPS, Start-up/Linear Regulator  
Features  
Description  
• Accepts inputs from 15 to 450V  
LR645 is a high-input voltage, low-output current, linear  
regulator that is available in two versions. A 3-terminal,  
fixed-output voltage version is available in TO-92, TO-  
220 and SOT-89 packages, as well as an adjustable  
voltage version available in an 8-lead SOIC package.  
• Output currents: up to 3.0mA continuous, 30mA  
peak  
• Supply current typically 50µA  
• Line regulation typically 0.1mV/V  
• Output can be trimmed from 8.0 to 12V  
The 3-terminal version of LR645 functions like any  
other low-voltage, 3-terminal regulator except it allows  
the use of much higher-input voltages. When used in a  
Switched-mode Power Supply (SMPS), start-up circuit,  
LR645 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.  
• Output current can be increased to 150mA with  
external FET  
Applications  
• Off-line SMPS startup circuits (pulse loads)  
• Low power off-line regulators  
• Regulators for noisy inputs  
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 metal–oxide–  
semiconductor field-effect transistor (MOSFET) for  
increased output current. When used in conjunction  
with depletion mode MOSFET DN2540N5, an output  
current of up to 150mA is achieved.  
WARNING  
The LR645 does NOT provide galvanic isolation. When operated from an AC line, potentially lethal voltages can be  
present on the IC. Adequate means of protecting the end user from such voltages must be provided by the circuit  
developer.  
2015 Microchip Technology Inc.  
DS20005384A-page 1  

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