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参数资料
| 型号： | LM2575MX-12/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封装： | SOIC-24 |
| 文件页数： | 33/40页 |
| 文件大小： | 917K |
| 代理商： | LM2575MX-12/NOPB |
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National P/N LM2575HV - SIMPLE SWITCHER 1A Step-Down Voltage Regulator
LM2575HVADJ
MWC
Full
production
N/A
wafer
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General Description
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 guaranteed ±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 A
(typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal
shutdown for full protection under fault conditions.
Features
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3.3V, 5V, 12V, 15V, and adjustable output versions
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Adjustable version output voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and
load conditions
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Guaranteed 1A output current
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Wide input voltage range, 40V up to 60V for HV version
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Requires only 4 external components
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52 kHz fixed frequency internal oscillator
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TTL shutdown capability, low power standby mode
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High efficiency
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Uses readily available standard inductors
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Thermal shutdown and current limit protection
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P+ Product Enhancement tested
Applications
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Simple high-efficiency step-down (buck) regulator
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Efficient pre-regualtor for linear regulators
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On-card switching regulators
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Positive to negative converter (Buck-Boost)
Application Notes
Title
Size in Kbytes Date
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file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM2575HV.html (4 of 5) [Aug-09-2002 12:18:50 PM]
相关PDF资料 |
PDF描述 |
|---|---|
| LM2575-ADJMDC | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC5 |
| LM2575-5.0MWC | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC |
| LM2575HV3.3MDC | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC |
| LM1575-5.0MW8 | 3.2 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, UUC |
| LM1575WG5.0-MPR | 3.2 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, CDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2575MX-15 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Mode SMPS Controller |
| LM2575MX-15/NOPB | 功能描述:IC REG BUCK 15V 1A 24-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:SIMPLE SWITCHER® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:3.3V 输入电压:4.5 V ~ 24 V PWM 型:- 频率 - 开关:- 电流 - 输出:125mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 包装:Digi-Reel® 供应商设备封装:SOT-6 其它名称:MAX1836EUT33#TG16DKR |
| LM2575MX-3.3/NOPB | 功能描述:IC REG BUCK 3.3V 1A 24-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:SIMPLE SWITCHER® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:3.3V 输入电压:4.5 V ~ 24 V PWM 型:- 频率 - 开关:- 电流 - 输出:125mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 包装:Digi-Reel® 供应商设备封装:SOT-6 其它名称:MAX1836EUT33#TG16DKR |
| LM2575MX-5.0 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2575MX-5.0 NOPB | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4V to 40V 24-Pin SOIC W T/R 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4V to 40V 24-Pin SOIC T/R |
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