- 您现在的位置：买卖IC网 > PDF目录80234 > LM2576-5.0MWC (NATIONAL SEMICONDUCTOR CORP) 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC PDF资料下载
参数资料
| 型号： | LM2576-5.0MWC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC |
| 封装： | WAFER |
| 文件页数： | 1/27页 |
| 文件大小： | 741K |
| 代理商： | LM2576-5.0MWC |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页
LM2576/LM2576HV Series
SIMPLE SWITCHER 3A Step-Down Voltage Regulator
General Description
The LM2576 series of regulators are monolithic integrated
circuits that provide all the active functions for a step-down
(buck) switching regulator, capable of driving 3A load with
excellent line and load regulation. These devices are avail-
able 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 LM2576 series offers a high-efficiency replacement for
popular three-terminal linear regulators. It substantially re-
duces the size of the heat sink, and in some cases no heat
sink is required.
A standard series of inductors optimized for use with the
LM2576 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 out-
put voltage within specified input voltages and output load
conditions, and ±10% on the oscillator frequency. External
shutdown is included, featuring 50 A (typical) standby cur-
rent. The output switch includes cycle-by-cycle current limit-
ing, as well as thermal shutdown for full protection under
fault conditions.
Features
n 3.3V, 5V, 12V, 15V, and adjustable output versions
n Adjustable version output voltage range,
1.23V to 37V (57V for HV version) ±4% max over
line and load conditions
n Guaranteed 3A output current
n Wide input voltage range, 40V up to 60V for
HV version
n Requires only 4 external components
n 52 kHz fixed frequency internal oscillator
n TTL shutdown capability, low power standby mode
n High efficiency
n Uses readily available standard inductors
n Thermal shutdown and current limit protection
n P+ Product Enhancement tested
Applications
n Simple high-efficiency step-down (buck) regulator
n Efficient pre-regulator for linear regulators
n On-card switching regulators
n Positive to negative converter (Buck-Boost)
Typical Application (Fixed Output Voltage Versions)
SIMPLE SWITCHER is a registered trademark of National Semiconductor Corporation.
DS011476-1
FIGURE 1.
June 1999
LM2576/LM2576HV
Series
SIMPLE
SWITCHER
3A
Step-Down
V
oltage
Regulator
1999 National Semiconductor Corporation
DS011476
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LES020ZG-3NN38 | 1-OUTPUT 15 W DC-DC REG PWR SUPPLY MODULE |
| LES20A24-1V8E | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| LM3814MX-7.0/NOPB | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| LM2575T-12-HT | 3.2 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PSFM5 |
| LT1004CPWRE4-1-2 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2576ADJ | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Easy Switcher 3.0A Step-Down Voltage Regulator 开关稳压集成块 |
| LM2576-ADJ | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Easy Switcher 3.0A Step-Down Voltage Regulator |
| LM2576BM | 制造商:TGS 制造商全称:Tiger Electronic Co.,Ltd 功能描述:3A Step-Down Voltage Regulator |
| LM2576BT | 功能描述:IC REG BUCK ADJ 3A TO220-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
| LM2576BU | 功能描述:IC REG BUCK ADJ 3A TO263-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
发布紧急采购，3分钟左右您将得到回复。