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| 型號： | LM2575-5.0MWC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | WAFER |
| 文件頁數(shù)： | 33/40頁 |
| 文件大?。?/td> | 917K |
| 代理商： | LM2575-5.0MWC |
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National P/N LM2575HV - SIMPLE SWITCHER 1A Step-Down Voltage Regulator
LM2575HVADJ
MWC
Full
production
N/A
wafer
jar
of
N/A
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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
q
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
q
Guaranteed 1A output current
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Wide input voltage range, 40V up to 60V for HV version
q
Requires only 4 external components
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52 kHz fixed frequency internal oscillator
q
TTL shutdown capability, low power standby mode
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High efficiency
q
Uses readily available standard inductors
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Thermal shutdown and current limit protection
q
P+ Product Enhancement tested
Applications
q
Simple high-efficiency step-down (buck) regulator
q
Efficient pre-regualtor for linear regulators
q
On-card switching regulators
q
Positive to negative converter (Buck-Boost)
Application Notes
Title
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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]
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| 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 |
| LM2575MX-15/NOPB | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDSO24 |
| LM2575BUT&R | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2575-5D2T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Easy Switcher 1.0 A Step-Down Voltage Regulator(389.50 k) |
| LM2575-5T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Easy Switcher 1.0 A Step-Down Voltage Regulator(389.50 k) |
| LM2575-5TV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Easy Switcher 1.0 A Step-Down Voltage Regulator(389.50 k) |
| LM2575-ADJ | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:EASY SWITCHERE⑩ 1.0 A STEP-DOWN VOLTAGE REGULATOR |
| LM2575-ADJ/NOPB | 制造商:Texas Instruments 功能描述: |
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