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LM2586T-3.3 PDF预览

LM2586T-3.3

更新时间： 2024-09-08 22:24:03
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器开关式稳压器或控制器电源电路开关式控制器局域网
页数 文件大小 规格书
28页 780K
描述
SIMPLE SWITCHER 3A Flyback Regulator with Shutdown

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中文翻译

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LM2586T-3.3 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：BENT STAGGERED, TO-220, 7 PINReach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：8.49Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
最大输入电压：40 V最小输入电压：4 V
标称输入电压：5 VJESD-30 代码：R-PZFM-T7
JESD-609代码：e0湿度敏感等级：1
功能数量：1端子数量：7
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：3 A标称输出电压：3.3 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-220
封装等效代码：ZIP7,.15,.2TB封装形状：RECTANGULAR
封装形式：FLANGE MOUNT峰值回流温度（摄氏度）：260
认证状态：Not Qualified子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：115 mA表面贴装：NO
切换器配置：BOOST最大切换频率：200 kHz
技术：BIPOLAR温度等级：AUTOMOTIVE
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：ZIG-ZAG
处于峰值回流温度下的最长时间：40Base Number Matches：1

LM2586T-3.3 数据手册

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May 1996  
LM2586  
SIMPLE SWITCHER® 3A Flyback Regulator with  
Shutdown  
General Description  
Features  
n Requires few external components  
n Family of standard inductors and transformers  
n NPN output switches 3.0A, can stand off 65V  
n Wide input voltage range: 4V to 40V  
The LM2586 series of regulators are monolithic integrated  
circuits specifically designed for flyback, step-up (boost), and  
forward converter applications. The device is available in 4  
different output voltage versions: 3.3V, 5.0V, 12V, and adjust-  
able.  
n Adjustable switching frequency: 100 kHz to 200 kHz  
n External shutdown capability  
n Draws less than 60 µA when shut down  
n Frequency synchronization  
n Current-mode operation for improved transient  
response, line regulation, and current limit  
n Internal soft-start function reduces in-rush current during  
start-up  
n Output transistor protected by current limit, under  
voltage lockout, and thermal shutdown  
Requiring a minimum number of external components, these  
regulators are cost effective, and simple to use. Included in  
the datasheet are typical circuits of boost and flyback regula-  
tors. Also listed are selector guides for diodes and capacitors  
and a family of standard inductors and flyback transformers  
designed to work with these switching regulators.  
The power switch is a 3.0A NPN device that can stand-off  
65V. Protecting the power switch are current and thermal  
limiting circuits, and an undervoltage lockout circuit. This IC  
contains an adjustable frequency oscillator that can be pro-  
grammed up to 200 kHz. The oscillator can also be synchro-  
nized with other devices, so that multiple devices can oper-  
ate at the same switching frequency.  
±
n System output voltage tolerance of 4% max over line  
and load conditions  
Typical Applications  
n Flyback regulator  
n Forward converter  
n Multiple-output regulator  
n Simple boost regulator  
Other features include soft start mode to reduce in-rush cur-  
rent during start up, and current mode control for improved  
rejection of input voltage and output load transients and  
cycle-by-cycle current limiting. The device also has a shut-  
down pin, so that it can be turned off externally. An output  
±
voltage tolerance of 4%, within specified input voltages and  
output load conditions, is guaranteed for the power supply  
system.  
Flyback Regulator  
DS012516-1  
®
SIMPLE SWITCHER® and Switchers Made Simple are registered trademarks of National Semiconductor Corporation.  
© 1999 National Semiconductor Corporation  
DS012516  
www.national.com  
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