The LM2676 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 3-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON-resistance DMOS power switch. The series consists of fixed output voltages of 3.3-V, 5-V, and 12-V and an adjustable output version.

The SIMPLE SWITCHER^® concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2676 are available from several manufacturers to greatly simplify the design process.

The LM2676 series also has built-in thermal shutdown, current limiting and an ON/OFF control input that can power down the regulator to a low 50-µA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.

德州仪器的lm2676sx / nopb
lm2676 series of the是单片集成电路调节器，provide all of the functions for a step -唐活性（巴克）开关调节器能够驱动up to 3线和负载调节负荷以及优秀的特性。高效（＞90%）是获得through the use of a low我们抵抗DMOS电源开关。系列固定输出电压consists of of 3.3-v，5 - V和12 - V和一个可调输出版本。
简单的switcher®provides for a complete设计概念使用最小number of external components。高固定频率振荡器（260千赫）allows the use of身体大小的小部件。a family of标准电感器for use with the lm2676 are available from several制造商to greatly简化设计过程。
the lm2676系列也有内置热关机，限流电阻和一个开/关控制输入功率调节to that can down the低静态电流50μ待机状态。输出电压is ensured to a±2 %的耐受性。The时钟频率是控制to within a±11 %的耐受性。