具有斜率可调及低占空比辅助启动的PWM风扇马达驱动芯片

EUM6804是一款用于无刷风扇马达驱动的芯片，它集成了三种转速控制模式，低占空比辅助启动，换相软切换，锁定保护，霍尔偏置，转速反馈，低功耗待机，快速启动以及热关断等功能。EUM6804能够驱动具有不同转速曲线要求的风扇，并且能满足笔记本电脑等便携式设备所要求的静音和低功耗特性。\nEUM6804的三种转速控制模式分别是PWM模式，VCC加斜率可调模式，VCC控制模式。低占空比辅助启动确保风扇在极低占空比下仍然能顺利启动或重启。换相软切换使得风扇的换相噪声更低，抖动更小。如果马达被外部应力或者障碍物卡住，则过驱动电流可能会引起温度升高而损坏马达。为了防止此类现象，当马达锁死后，锁定保护电路将关 •单相全波驱动\n•三种转速控制模式\nPWM模式\nVCC加斜率可调模式\nVCC控制模式\n•低占空比辅助启动\nSD为高，开启此功能\nSD为低，关闭此功能\n•换相软切换\n•锁定保护及自动重启\n•低功耗待机及快速启动\n极低待机功耗（PWM为低）\n•转速反馈\n•霍尔偏置\n•热关断保护\n•UDFN－10封装\n•符合RoHS规范及Pb-Free，Halogen-Free;

PWM Fan Motor Driver with Slope Control and Low Duty Startup

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Dual N-Channel Enhancement Mode Field Effect Transistor

General Description The AO6804 uses advanced trench technology to provide excellent RDS(ON), low gate charge and operation with gate voltages as low as 2.5V. This device is suitable for use as a load switch or in PWM applications. AO6804 is Pb-free (meets ROHS & Sony 259 specifications). Fea

VIF/SI SIF

LA75503V is a PAL completely unadjusted VIF / SIF signal processing IC for TV / VTR. Supports IF frequencies of 38MHz, 38.9MHz, and 39.5MHz. It also supports PAL voice multi-system (M / N, B / G, I, D / K). Built-in voice carrier TRAP and voice carrier BPF. Adopt 4MHz for the reference frequency

4-Pin, Low-Power 關P Reset Circuits with Manual Reset

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WHITE / BLUE LED DRIVER FOR LI- ION BATTERY APPLICATION

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Monitor On-Screen Display

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