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LM2591HV

更新时间： 2024-11-21 12:09:43
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德州仪器 - TI /
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29页 3239K
描述
LM2591HV SIMPLE SWITCHER Power onverter 150 kHz 1A Step-Down Voltage

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LM2591HV 数据手册

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LM2591HV  
www.ti.com  
SNVS074D –MAY 2001–REVISED APRIL 2013  
®
LM2591HV SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage  
Regulator  
Check for Samples: LM2591HV  
1
FEATURES  
DESCRIPTION  
The LM2591HV series of regulators are monolithic  
integrated circuits that provide all the active functions  
for a step-down (buck) switching regulator, capable of  
driving a 1A load with excellent line and load  
regulation. These devices are available in fixed output  
voltages of 3.3V, 5V, and an adjustable output  
version.  
23  
•
3.3V, 5V, and Adjustable Output Versions  
•
Adjustable Version Output Voltage Range,  
1.2V to 57V ±4% Max Over Line and Load  
Conditions  
•
•
•
•
•
•
•
•
Specified 1A Output Load Current  
Available in 5-Pin Package  
This series of switching regulators is similar to the  
LM2590HV, but without some of the supervisory and  
performance features of the latter.  
Input Voltage Range Up to 60V  
150 kHz Fixed Frequency Internal Oscillator  
On/Off Control  
Requiring  
a
minimum number of external  
Low Power Standby Mode, IQ Typically 90 μA  
High Efficiency  
components, these regulators are simple to use and  
include internal frequency compensation†, improved  
line and load specifications and a fixed-frequency  
oscillator.  
Thermal Shutdown and Current Limit  
Protection  
The LM2591HV operates at a switching frequency of  
150 kHz thus allowing smaller sized filter components  
than what would be needed with lower frequency  
switching regulators. Available in a standard 5-lead  
package with several different lead bend options, and  
a 5-lead Surface mount package.  
APPLICATIONS  
•
Simple High-Efficiency Step-Down (Buck)  
Regulator  
•
•
•
Efficient Pre-Regulator for Linear Regulators  
On-Card Switching Regulators  
Other features include a specified ±4% tolerance on  
output voltage under all conditions of input voltage  
and output load conditions, and ±15% on the  
oscillator frequency. External shutdown is included,  
featuring typically 90 μA standby current. Self  
protection features include a two stage current limit  
for the output switch and an over temperature  
shutdown for complete protection under fault  
conditions.  
Positive to Negative Converter  
† Patent Number 5,382,918.  
Typical Application  
(Fixed Output Voltage Versions)  
Figure 1.  
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.  
SIMPLE SWITCHER is a registered trademark of Texas Instruments.  
2
3
All other trademarks are the property of their respective owners.  
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 © 2001–2013, Texas Instruments Incorporated  
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LM2591HV 替代型号

型号 品牌 替代类型 描述 数据表
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