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LM2585SX-12/NOPB PDF预览

LM2585SX-12/NOPB

更新时间： 2024-02-18 04:47:59
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德州仪器 - TI /
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32页 3969K
描述
LM2585 SIMPLE SWITCHER® 3A Flyback Regulator

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LM2585SX-12/NOPB 数据手册

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LM2585  
www.ti.com  
SNVS120F –APRIL 2000–REVISED APRIL 2013  
®
LM2585 SIMPLE SWITCHER 3A Flyback Regulator  
Check for Samples: LM2585  
1
FEATURES  
DESCRIPTION  
The LM2585 series of regulators are monolithic  
234  
•
Requires Few External Components  
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 adjustable.  
•
Family of Standard Inductors and  
Transformers  
•
•
•
NPN Output Switches 3.0A, Can Stand Off 65V  
Wide Input Voltage Range: 4V to 40V  
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 regulators. 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.  
Current-mode Operation for Improved  
Transient Response, Line Regulation, and  
Current Limit  
•
•
100 kHz Switching Frequency  
Internal Soft-start Function Reduces In-rush  
Current During Start-up  
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 a 100 kHz fixed-  
frequency internal oscillator that permits the use of  
small magnetics. Other features include soft start  
mode to reduce in-rush current during start up,  
current mode control for improved rejection of input  
voltage and output load transients and cycle-by-cycle  
current limiting. An output voltage tolerance of ±4%,  
within specified input voltages and output load  
conditions, is specified for the power supply system.  
•
•
Output Transistor Protected by Current Limit,  
Under Voltage Lockout, and Thermal  
Shutdown  
System Output Voltage Tolerance of ±4% Max  
Over Line and Load Conditions  
TYPICAL APPLICATIONS  
•
•
•
•
Flyback Regulator  
Multiple-output Regulator  
Simple Boost Regulator  
Forward Converter  
Connection Diagrams  
Figure 3. Bent, Staggered Leads  
5-Lead TO-220  
Side View  
See NDH005D Package  
Figure 1. Bent, Staggered Leads  
5-Lead TO-220  
Top View  
See NDH005D Package  
Figure 4. 5-Lead DDPAK/TO-263  
Side View  
See KTT Package  
Figure 2. 5-Lead DDPAK/TO-263  
Top View  
See KTT Package  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Switchers Made Simple is a trademark of Texas Instruments.  
SIMPLE SWITCHER is a registered trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
2
3
4
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2000–2013, Texas Instruments Incorporated  
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LM2585SX-12/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM2585S-12/NOPB TI

完全替代

 LM2585 SIMPLE SWITCHER® 3A Flyback Regulator
LM2585SX-ADJ TI

类似代替

 LM2585 SIMPLE SWITCHER® 3A Flyback Regulator

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