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参数资料
| 型号： | LM2577S-12X |
| 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, PSSO5 |
| 封装： | PLASTIC, TO-263, SMT-5 |
| 文件页数： | 1/31页 |
| 文件大小： | 1406K |
| 代理商： | LM2577S-12X |
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LM1577/LM2577
SIMPLE SWITCHER Step-Up Voltage Regulator
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 regula-
tors.
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 compo-
nents, 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
n
Requires few external components
n
NPN output switches 3.0A, can stand off 65V
n
Wide input voltage range: 3.5V to 40V
n
Current-mode operation for improved transient
response, line regulation, and current limit
n
52 kHz internal oscillator
n
Soft-start function reduces in-rush current during start-up
n
Output switch protected by current limit, under-voltage
lockout, and thermal shutdown
Typical Applications
n
Simple boost regulator
n
Flyback and forward regulators
n
Multiple-output regulator
Connection Diagrams
Straight Leads
5-Lead TO-220 (T)
Bent, Staggered Leads
5-Lead TO-220 (T)
01146804
Top View
Order Number LM2577T-12, LM2577T-15,
or LM2577T-ADJ
See NS Package Number T05A
01146805
Top View
Order Number LM2577T-12 Flow LB03, LM2577T-15
Flow LB03, or LM2577T-ADJ Flow LB03
See NS Package Number T05D
SIMPLE SWITCHER is a registered trademark of National Semiconductor Corporation.
April 2005
LM1577/LM2577
SIMPLE
SWITCHER
Step-Up
V
oltage
Regulator
2005 National Semiconductor Corporation
DS011468
www.national.com
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2577S-15 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:SIMPLE SWITCHER-R Step-Up Voltage Regulator |
| LM2577S-15/NOPB | 功能描述:IC REG MULTI CONFIG 15V TO263-5 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 |
| LM2577S-15/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter IC |
| LM2577S-ADJ | 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 |
| LM2577S-ADJ/NOPB | 功能描述:直流/直流开关转换器 STEP-UP VLTG REG 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 |
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