LM2575-N
- 3.3V, 5V, 12V, 15V, and Adjustable Output Versions
- Adjustable Version Output Voltage
Range,
- 1.23V to 37V (57V for HV Version) ±4% Max Over
- Line and Load Conditions
- Specified 1A Output Current
- Wide Input Voltage Range, 40V up to 60V for HV Version
- Requires Only 4 External Components
- 52 kHz Fixed Frequency Internal Oscillator
- TTL Shutdown Capability, Low Power Standby Mode
- High Efficiency
- Uses Readily Available Standard Inductors
- Thermal Shutdown and Current Limit Protection
- P+ Product Enhancement Tested
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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 specified ±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 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator 数据表 (Rev. E) | 2013-4-3 | |||
| 应用手册 | Switching regulator fundamentals (Rev. C) | PDF | HTML | 2019-2-5 | |||
| 应用手册 | Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) | 2014-9-12 | ||||
| 应用手册 | AN-776 20-W SIMPLE SWITCHER Forward Converter (Rev. A) | 2013-4-23 | ||||
| 应用手册 | AN-1197 Selecting Inductors for Buck Converters (Rev. B) | 2013-4-23 | ||||
| 应用手册 | AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) | 2013-4-23 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TO-263 (KTT) | 5 | Ultra Librarian |
| TO-220 (KC) | 5 | Ultra Librarian |
| TO-220 (NEB) | 5 | Ultra Librarian |
| TO-220 (NDH) | 5 | Ultra Librarian |
| SOIC (DW) | 24 | Ultra Librarian |
订购和质量
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