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LR645N3 PDF预览

LR645N3

更新时间： 2024-10-28 22:31:03
品牌 Logo 应用领域
超科 - SUPERTEX 稳压器开关
页数 文件大小 规格书
4页 324K
描述
High Input Voltage SMPS Start-up / Linear Regulator

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LR645N3 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：TO-92包装说明：TO-92, SIP3,.1,50
针数：3Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.41可调性：FIXED
最大绝对输入电压：450 V最大输入电压：450 V
最小输入电压：15 VJESD-30 代码：O-PBCY-T3
JESD-609代码：e0最大电网调整率：0.2%
最大负载调整率：0.4%功能数量：1
输出次数：1端子数量：3
工作温度TJ-Max：125 °C工作温度TJ-Min：-40 °C
最大输出电流 1：0.003 A最大输出电压 1：11.5 V
最小输出电压 1：9 V标称输出电压 1：10 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-92
封装等效代码：SIP3,.1,50封装形状：ROUND
封装形式：CYLINDRICAL峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified调节器类型：FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR
子类别：Other Regulators表面贴装：NO
端子面层：Tin/Lead (Sn/Pb)端子形式：THROUGH-HOLE
端子节距：1.27 mm端子位置：BOTTOM
处于峰值回流温度下的最长时间：NOT SPECIFIED最大电压容差：15%
Base Number Matches：1

LR645N3 数据手册

 浏览型号LR645N3的Datasheet PDF文件第2页浏览型号LR645N3的Datasheet PDF文件第3页浏览型号LR645N3的Datasheet PDF文件第4页 
LR645  
High Input Voltage  
SMPS Start-up / Linear Regulator  
Ordering Information  
Product marking for TO-243AA:  
LR6❋  
where ❋ = 2-week alpha date code  
Order Number / Package  
TO-243AA* TO-220 SO-8  
LR645N3 LR645N8 LR645N5 LR645LG LR645ND  
Max. Input Voltage  
TO-92  
Die  
450V  
*Same as SOT-89. Product supplied on 2000 piece carrier tape reels.  
Features  
General Description  
❏
❏
Accepts inputs from 15V to 450V  
The Supertex LR6 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 8 pin 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.  
Compatible with industry standard PWM ICs.  
See application note AN-H28.  
❏
❏
❏
❏
❏
Output currents up to 3mA continuous, 30mA peak  
Supply current typically 50µA  
Line regulation typically 0.1mV/V  
Output can be trimmed from 8.0V to 12V  
Output current can be increased to 150mA with external FET  
The adjustable voltage version allows trimming of the output  
voltage from 8V to 12V.This version can also be connected to an  
external depletion mode MOSFET for increased output current.  
WhenusedinconjunctionwithSupertexdepletionmodeMOSFET  
DN2540N5, up to a 150mA is achieved.  
Applications  
❏
❏
❏
Off-line SMPS startup circuits (pulse loads)  
Low power off-line regulators  
Regulators for noisy inputs  
(continued on page 14-3)  
Pin Configuration  
Caution  
The LR6 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.  
TAB  
TAB  
1
2
3
TO-243AA  
(SOT-89)  
1 2 3  
TO-92  
Absolute Maximum Ratings  
Input Voltage  
5
450V  
1
1
2
2
3
3
4
Output Voltage  
15.5V  
SO-8  
TO-220  
Operating and Storage Temperature  
–55°C to +150°C  
300°C  
+VIN  
1
GND  
2
VOUT  
3
Trim  
—
Gate  
—
Soldering Temperature*  
*Distance of 1.6mm from case for 10 seconds  
TO-92  
TO-243AA  
TO-220  
P-DIP  
1
2, TAB  
2, TAB  
3
3
—
—
1
3
—
—
For detailed circuit and application information, please refer  
to application note AN-H28.  
1
4
5
7
11/12/01  
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability  
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to  
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the  
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.  
1234

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LR645N3 替代型号

型号 品牌 替代类型 描述 数据表
LR645N3-G SUPERTEX

完全替代

 High Input Voltage SMPS Start-up / Linear Regulator

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