PWM直接输入单相全波马达驱动芯片

EUM6898S是一款单相直流无刷马达驱动芯片，其通过PWM直接输入模式高效控制直流无刷马达运转。EUM6898S内置功能包括停转模式、转速斜率设定、软启动、风扇转速检测、锁定保护、自动重启、过热保护、过电流保护和噪声抑制等功能。噪声抑制模式通过调整SW引脚电阻，优化无刷直流风扇马达的噪声性能，实现马达低噪声、低抖动运转；停转模式占空比通过控制STOP引脚电压进行设定；转速斜率设定通过预设SL引脚电压实现；软启动控制模式能够有效抑制马达启动瞬间的尖峰浪涌电流，还能保证低转速运转时马达可靠启动。如果马达被外力或者障碍物卡住，则过驱动电流会引起温度升高而损坏马达，为了防止此类现象，芯片内置锁定保护 •单相全波驱动输出\n•外围组件少\n•内置过冲吸收电路，无需外接Zener\n•软启动和重启，外部可调\n•宽工作电压（3V～18V）\n•PWM直接输入控速\n•噪声抑制外部可调\n•停转占空比外部设定\n•风扇转速斜率外部设定\n•内置过电流保护\n•锁定保护与自动重启\n•内置霍尔偏置\n•FG输出\n•TSSOP-14（EP）封装\n•符合RoHS规范及无铅，无卤;

Eutech

德信科技

Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization

文件：1.00905 Mbytes 页数：23 Pages

NSC

国半

Dual N-Channel Logic Level PWM Optimized PowerTrench MOSFET

General Description These N-Channel Logic Level MOSFETs are produced using Fairchild Semiconductor’s advanced PowerTrench process that has been especially tailored to minimize the on-state resistance and yet maintain superior switching performance. These devices are well suited for low voltage a

文件：81 Kbytes 页数：5 Pages

FAIRCHILD

仙童半导体

Dual 3 A, 20 V Synchronous Step-Down Regulator with Integrated High-Side MOSFET

GENERAL DESCRIPTION The ADP2323 is a full featured, dual output, step-down dc-to-dc regulator based on current-mode architecture. The ADP2323 integrates two high-side power MOSFETs and two low-side drivers for the external N-channel MOSFETs. The two pulse-width mod ulation (PWM) channels can be c

文件：2.11252 Mbytes 页数：32 Pages

AD

亚德诺