LM2575-N SIMPLE SWITCHER 1A 降压电压稳压器 | 德州仪器 TI.com.cn

LM2575-N (正在供货) SIMPLE SWITCHER 1A 降压电压稳压器

SIMPLE SWITCHER 1A 降压电压稳压器 - LM2575-N
数据表
 

备选器件推荐

  • LM25010  -  Thermally Enhanced Package, Higher Efficiency, Higher Operating Frequency & Better Transient Respons
  • LM25010-Q1  -  Thermally Enhanced Package, Higher Efficiency, Higher Operating Frequency & Better Transient Respons
  • LMZ34202  -  Looking for a power module? Try the LMZ34202
  • LM25575  -  Enhanced Package, More Efficient And Better Transient Response
  • LM25575-Q1  -  Enhanced Package, More Efficient And Better Transient Response
  • LM2595  -  1A, 150 Khz, Smaller Inductor
  • LM2672  -  Has Sync Pin, Improved Switching Frequency And Efficiency
  • LM2675  -  Thermally Enhanced Package, Higher Efficiency And Higher Operating Frequency
  • LM2695  -  More Efficient, Improved Switching Frequency
  • LM2734  -  1A SOT23 3.0V To 20V Vin, 500Khz - 3Mhz FSW
  • LM2734-Q1  -  1A SOT23 3.0V To 20V Vin, 500Khz - 3Mhz FSW
  • LM5010  -  1A, 80V Vin, 50Khz-800Khz FSW

描述

The LM2575 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, 12V, 15V, 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 LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.

A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a specified ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

特性

  • 3.3V, 5V, 12V, 15V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range,
    •  1.23V to 37V (57V for HV Version) ±4% Max Over
    •  Line and Load Conditions
  • Specified 1A Output Current
  • Wide Input Voltage Range, 40V up to 60V for HV Version
  • Requires Only 4 External Components
  • 52 kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability, Low Power Standby Mode
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current Limit Protection
  • P+ Product Enhancement Tested

All trademarks are the property of their respective owners.

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LM2575-N

  最小   最大 范围
输入电压  V 4.5 to 40.0V
输出电压  V 1.23 to 37V
输出电流  A ≤ 1A
环境温度  °C -40 to 125°C

参数

与其它产品相比 降压转换器(集成开关) 邮件 下载到电子表格中
Part number 立即下单 Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LM2575-N 立即下单 4     40     3.3     37     1     1     42     63     10     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog     DDPAK/TO-263 | 5
PDIP | 16
SOIC | 24
TO-220 | 5    
Converter     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
See datasheet (PDIP)
24SOIC: 160 mm2: 10.3 x 15.5 (SOIC | 24)
See datasheet (TO-220)    
LM2574 立即下单 4     40     3.3     37     0.5     1     52     52     5     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog     PDIP | 8
SOIC | 14    
Converter     See datasheet (PDIP)
14SOIC: 93 mm2: 10.325 x 8.9915 (SOIC | 14)    
LM2574HV 立即下单 4     60     3.3     37     0.5     1     52     52     5     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog     PDIP | 8
SOIC | 14    
Converter     See datasheet (PDIP)
14SOIC: 93 mm2: 10.325 x 8.9915 (SOIC | 14)    
LM2575 无样片 4.75     40     1.23     37     1     1     47     58     5     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog     PDIP | 16     Converter     See datasheet (PDIP)    
LM2575HV 立即下单 4     60     3.3     57     1     1     42     63     10     Enable
Over Current Protection    
Voltage Mode     98     -40 to 125     Catalog