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LM2596-33F5 PDF预览

LM2596-33F5

更新时间： 2024-11-19 05:42:03
品牌 Logo 应用领域
全宇昕 - CYSTEKEC 转换器
页数 文件大小 规格书
12页 775K
描述
150kHz, 3A PWM Buck DC/DC Converter

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LM2596-33F5 数据手册

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Spec. No. : C548F5  
Issued Date : 2007.12.11  
Revised Date :  
CYStech Electronics Corp.  
Page No. : 1/12  
150kHz, 3A PWM Buck DC/DC Converter  
LM2596-XXE5/F5  
Description  
The LM2596-XXE5/F5 series of regulators are monolithic ICs that provide all active functions for a step-down  
(buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are  
available in fixed output voltage of 3.3V, 5V, 12V and an adjustable output version. Requiring a minimum number of  
external components, these regulators are simple to use and include internal frequency compensation and a fixed-  
frequency oscillator.  
The LM2596-XXE5/F5 series operates at a switching frequency of 150kHz, thus allowing smaller sized filter  
components than what would be needed with lower frequency switching regulators. Available in standard 5-lead  
TO-220 and TO-263 packages with several different lead bend options. A standard series of inductors are available  
from several different manufacturers optimized for use with the LM2596-XXE5/F5 series. This feature greatly  
simplifies the design of switch-mode power supplies. Other features include a guaranteed ±4% tolerance on output  
voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External  
shutdown is included, featuring 80μA standby current. Self protection features include a two stage frequency  
reducing current limit for the output switch and an over temperature shutdown for complete protection under fault  
conditions.  
Features  
● 3.3V, 5V, 12V, and adjustable output versions  
● Adjustable version output voltage range, 1.3V to 37V±4% max over line and load conditions  
● 150kHz±15% fixed switching frequency  
● TTL shutdown capability  
● Operating voltage can be up to 40V  
● Output load current:3A  
● TO220-5L and TO263-5L packages  
● Low power standby mode.  
● Thermal shutdown and current limit protection.  
● High efficiency  
● Built-in switching transistor on chip  
● Requires only 4 external components  
● Use readily available standard inductors  
Applications  
● Simple high-efficiency step-down (buck) regulator.  
● Positive to negative converter (Buck-Boost).  
● On-card switching regulators.  
LM2596-XXE5/F5  
CYStek Product Specification  
1234567...12

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