SC2307A概述:
SC2307内置异步自动升压模块的SC2307给音箱提供了宽裕的功率输出,并且最大升压值在给音箱提供了宽裕的功率输出,并且最大升压值在5.7V 、6.6V 、7.2V和7.5V四个电压值之间可选。
当输入信号较小时,升压电路不工作,四个电压值之间可选。当输入信号较小时,升压路不工作,D类直接由电源供电;当输入信号变大时,自动开启升压模块升压至中间电平给类直接由电源供电;当输入信号变大时,自动开启升压模块升压至中间电平给D类供电;当输入信号变得更大时,升压电路继续升压至用户设定最大电压给类供电;当输入信号变得更大时,升压电路继续升压至用户设定最大电压给D类供电,这样可以提高系统工作效率,延长电池续航时间。类供电,这样可以提高系统工作效率,延长电池续航时间。
SC2307 具有AGC防破音功能,能显著提高音质,创造舒适的听音享防破音功能,能显著提高音质,创造舒适的听音享 受 ,并 保护扬声器免受过载损坏 。
SC2307 具 备AB 类/D 类模 式切换 功能, 切换 至AB类可类可 减少 系统中功 放FM 的 干扰 。SC2307 的 全差分架构 有效 地 提高了 芯片对RF 噪声的 抑制 能 力 。 无需滤波器 的PWM 调制结构及内置的升压模块内置的升压模块, 尽 可能的 减少 了 外围器件, 另外SC2307内置了内置了 过流保护, 短 路 保护 和 过热保护, 有效的保护芯片保护芯片 在异 常 的工作 条件下 不 被损坏 。
SC2307A概述:
The SC2307A with built-in boost module provides ample power output to the speaker, and the maximum boost value is selectable between four voltage levels of 6.5V, 7.0 and 7.5V. When the input signal is small, the boost circuit does not work, and the Class D is irectly
powered by the power supply; When the input signal becomes larger, the boost module is automatically turned on to the intermediate level to supply power to the Class D; When the input signal becomes larger, the boost circuit continues to boost to the user-set maximum
voltage for the Class D power supply, which can improve system efficiency and extend attery life.
SC2307A has AGC Anti-Clipping Function, which can significantly improve the sound uality, create comfortable listening enjoyment, and protect the speaker from overload damage.
SC2307A has the Class AB/D mode switching function, and switching to the Class AB can reduce the interference of the amplifier in the system to FM.
The fully differential architecture of SC2307A effectively increases the chip‘s ability to reject RF noise.The PWM modulation structure without filter and the built-in boost module reduce the peripheral components as much as possible. In addition, SC2307A has built-in over current protection, short circuit protection and overheat protection, which effectively protects the chip from damage under abnormal working conditions.
SC2307A提供ESOP8封装。
SC2307A特点:
・ 输入电压 范围:3V~5.5V
・ 内置自适 应 升压电路, 将 输出电压自动升压至
5.7/6.6V/7.2/7.5V
・AGC 防破音功能
・D 类/AB 类 切换
・ 无需滤波的 的 D 类 PWM 输出
・ 输出功率 P O (D 类@10% THD+N,
V BAT = 3.7V )
R L =2Ω,10W(BOOST 升压值为 为 7.5V)
R L =2Ω,8.5W(BOOST 升压值为 为 6.6V)
R L =4Ω,7.0W(BOOST 升压值为 为 7.5V)
R L =4Ω,5.6W(BOOST 升压值为 为 6.6V)
・ 过流 、 短 路、 欠 压和 过温保护 功能
・Rohs 标准环保封装:
带散热片的 的 SOP8-PP
SC2307A特性:
Input voltage range: 3V to 5.5V
Adaptive Boost regulator, Boost Output PVDD: V BAT to 6.5V/7.0V/7.5V
AGC Anti-Clipping Function
Class D/Class AB selectable
Class D PWM output without filter
・Output Power P O (Class D@10% THD+N,V BAT = 3.7V)
R L =2Ω, 10W (BOOST PVDD= 7.5V)
R L =2Ω, 8.5W (BOOST PVDD= 6.5V)
R L =4Ω, 7.0W (BOOST PVDD= 7.5V)
R L =4Ω, 6.0W (BOOST PVDD= 6.5V)
Over Current Protection, Short Circuit Protection,Low voltage Protection, Thermal Protection included
Rohs standard environmental package:
SC2307A提供ESOP8封装
SC2307A应用:
Portable Speaker, Bluetooth Speaker
Portable Game Machines
Megaphone
MP4/GPS
Table PC
Note Book
SC2307A典型应用原理图:
SC2307A管脚排列及管脚描述: