SC2307A概述:
SC2307內(nèi)置異步自動升壓模塊的SC2307給音箱提供了寬裕的功率輸出，并且最大升壓值在給音箱提供了寬裕的功率輸出，并且最大升壓值在5.7V 、6.6V 、7.2V和7.5V四個電壓值之間可選。
當(dāng)輸入信號較小時，升壓電路不工作，四個電壓值之間可選。當(dāng)輸入信號較小時，升壓路不工作，D類直接由電源供電；當(dāng)輸入信號變大時，自動開啟升壓模塊升壓至中間電平給類直接由電源供電；當(dāng)輸入信號變大時，自動開啟升壓模塊升壓至中間電平給D類供電；當(dāng)輸入信號變得更大時，升壓電路繼續(xù)升壓至用戶設(shè)定最大電壓給類供電；當(dāng)輸入信號變得更大時，升壓電路繼續(xù)升壓至用戶設(shè)定最大電壓給D類供電，這樣可以提高系統(tǒng)工作效率，延長電池續(xù)航時間。類供電，這樣可以提高系統(tǒng)工作效率，延長電池續(xù)航時間。
SC2307 具有AGC防破音功能，能顯著提高音質(zhì)，創(chuàng)造舒適的聽音享防破音功能，能顯著提高音質(zhì)，創(chuàng)造舒適的聽音享 受 ，并 保護(hù)揚聲器免受過載損壞 。
SC2307 具 備AB 類/D 類模 式切換 功能， 切換 至AB類可類可 減少 系統(tǒng)中功 放FM 的 干擾 。SC2307 的 全差分架構(gòu) 有效 地 提高了 芯片對RF 噪聲的 抑制 能 力 。 無需濾波器 的PWM 調(diào)制結(jié)構(gòu)及內(nèi)置的升壓模塊內(nèi)置的升壓模塊, 盡 可能的 減少 了 外圍器件, 另外SC2307內(nèi)置了內(nèi)置了 過流保護(hù), 短 路 保護(hù) 和 過熱保護(hù), 有效的保護(hù)芯片保護(hù)芯片 在異 常 的工作 條件下 不 被損壞 。
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封裝。
SC2307A特點:
? 輸入電壓 范圍：3V~5.5V
? 內(nèi)置自適 應(yīng) 升壓電路, 將 輸出電壓自動升壓至
5.7/6.6V/7.2/7.5V
?AGC 防破音功能
?D 類/AB 類 切換
? 無需濾波的 的 D 類 PWM 輸出
? 輸出功率 P O （D 類@10% THD+N,
V BAT = 3.7V ）
R L =2Ω,10W(BOOST 升壓值為 為 7.5V)
R L =2Ω,8.5W(BOOST 升壓值為 為 6.6V)
R L =4Ω,7.0W(BOOST 升壓值為 為 7.5V)
R L =4Ω,5.6W(BOOST 升壓值為 為 6.6V)
? 過流 、 短 路、 欠 壓和 過溫保護(hù) 功能
?Rohs 標(biāo)準(zhǔn)環(huán)保封裝：
帶散熱片的 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封裝
SC2307A應(yīng)用：
Portable Speaker, Bluetooth Speaker
Portable Game Machines
Megaphone
MP4/GPS
Table PC
Note Book
SC2307A典型應(yīng)用原理圖：
SC2307A管腳排列及管腳描述：
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