| 品牌 | ns國半 | 型號 | lm2575s-12 |
| 批號 | 08+ | 封裝 | to-263-5 |
| 營銷方式 | 現貨 | 產品性質 | 熱銷 |
| 處理信號 | 模擬信號 | 工藝 | 半導體集成 |
| 導電類型 | 雙極型 | 集成程度 | 小規模 |
| 規格尺寸 | 5（mm） | 工作溫度 | -40~125（℃） |
| 靜態功耗 | 5（mw） |
simple switcher 1a step-down voltage regulator
features
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 μa (typical) standby current. the output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.