可任意限幅、内置自适应升压的2×8.0W立体声音频功放

HT878T是一款内置自适应升压的立体声D类音频功率放大器，由锂电池供电升压至VPOUT=8.3V时， THD+N=1%、1kHz信号条件下，能连续输出2×6.8W功率（4Ω负载）；另外，其还支持AB类模式。\n\nHT878T内置G类升压，可任意设置最大升压值，以满足不同的输出功率需求。该升压在小音乐信号时不升压，仅当功率较大时工作。其可大幅提高系统效率，延长电池续航时间。\n\nHT878T具有可任意配置的限幅(Limiter)功能。限幅功能开启后，即使输入信号很大，音乐输出也能被限制在指定的功率和THD+N之内，满足不同音质体验和保护喇叭的需求。\n\nHT878T还具有自动限温 • 可任意配置的限幅功能\n• 自由配置音频限制幅度，使输出音频信号限制在固定失真水平内\n• 内置自动限温控制功能-适应不同散热条件，避免出现过温关断现象\n• 高效自适应G类升压功能，有效延长播放时间-可调节最大限流值，有效防止电池拉死-升压值可调\n• 支持AB类与D类切换THD+N: 0.04%（RL=4Ω, fIN=1kHz, Po=2×1.0W）\n• 低静态电流：7mA, 3.7V\n• 输出功率(VBAT=4.2V, fIN=1kHz, RL=4Ω)2×6.8W (VPOUT=8.3V, THD+N= 1%, 连续输出)2×8.4W (VPOUT=8.3V, T;

Heroic

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Dual Element Detectors

TO-39 / TO-5 housing Competitive cost version Designed for motion control The LHi 874 and LHi 878 pyroelectric infrared-detector series are the standard dual element design recommended for all variants of motion control. They include a dual element pyro-electric ceramic with FET in source

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PerkinElmer

5V/3.3V/3V/Adjustable-Output, Step-Up/Step-Down DC-DC Converters

General Description The MAX877/MAX878/MAX879 are pulse-skipping, step-up/step-down DC-DC converters that provide a regulated output from inputs both above and below the output. They require only three external components—an inductor (typically 22µH) and two filter capacitors. Features ♦ Regulat

文件：128.25 Kbytes 页数：12 Pages

Maxim

美信

5V/3.3V/3V/Adjustable-Output, Step-Up/Step-Down DC-DC Converters

General Description The MAX877/MAX878/MAX879 are pulse-skipping, step-up/step-down DC-DC converters that provide a regulated output from inputs both above and below the output. They require only three external components—an inductor (typically 22µH) and two filter capacitors. Features ♦ Regulat

文件：128.25 Kbytes 页数：12 Pages

Maxim

美信