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| 型号： | LM2577MX-12/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封装： | 0.300 INCH, SO-24 |
| 文件页数： | 22/34页 |
| 文件大小： | 1008K |
| 代理商： | LM2577MX-12/NOPB |
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National P/N LM1577 - SIMPLE SWITCHER Step-Up Voltage Regulator
LM1577K-ADJ
MW8
Full production
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wafer
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General Description
The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for
step-up (boost), flyback, and forward converter switching regulators. The device is available in three
different output voltage versions: 12V, 15V, and adjustable.
Requiring a minimum number of external components, these regulators are cost effective, and simple to use.
Listed in this data sheet are a family of standard inductors and flyback transformers designed to work with
these switching regulators.
Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and
thermal limiting, and undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that
requires no external components, a soft start mode to reduce in-rush current during start-up, and current
mode control for improved rejection of input voltage and output load transients.
Features
q
Requires few external components
q
NPN output switches 3.0A, can stand off 65V
q
Wide input voltage range: 3.5V to 40V
q
Current-mode operation for improved transient response, line regulation, and current limit
q
52 kHz internal oscillator
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Soft-start function reduces in-rush current during start-up
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Output switch protected by current limit, under-voltage lockout, and thermal shutdown
Applications
q
Simple boost regulator
q
Flyback and forward regulators
q
Multiple-output regulator
Design Tools
Title
Size in Kbytes Date
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SimpleSwitcher DC-DC
Converters Design Software
10 Kbytes
12-Jun-
2002
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[Information as of 5-Aug-2002]
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2577MX-15 | 功能描述:IC REG MULTI CONFIG 15V 24SOIC 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 |
| LM2577MX-ADJ | 功能描述:IC REG MULTI CONFIG ADJ 24SOIC 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 |
| LM2577N-12 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM2577N-12/NOPB | 功能描述:IC REG MULTI CONFIG 12V 3A 16DIP 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 |
| LM2577N-15 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:SIMPLE SWITCHER-R Step-Up Voltage Regulator |
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