SY7304DBC产品品牌-产品参数-产品手册
SY7304DBC产品品牌
矽力杰（Silergy）是一家专注于设计和制造高性能模拟和混合信号集成电路的品牌。该公司致力于为客户提供高品质、创新的解决方案，涉及电源管理、LED驱动器、电池管理等领域。矽力杰产品以其高效能耗、稳定性强和先进的集成特性而备受认可，并在消费类电子产品、工业设备及汽车电子等领域得到广泛应用。
总部位于美国加州，矽力杰在全球范围内设有研发团队、销售网络以及技术支持服务，以满足客户需求并与之合作定制解决方案。作为一家技术导向型企业，该品牌不断投入研发，并致力于满足各种应用领域对高性能集成电路的需求。
综上所述，矽力杰是一家注重创新和可靠性的模拟和混合信号集成电路品牌，在行业中具有良好声誉。
SY7304DBC产品参数
商品参数
商品目录DC-DC电源芯片
功能类型升压型
输入电压3V~33V
输出电压600mV~33V
输出电流4A
开关频率1MHz
属性参数值
工作温度-40℃~+125℃
同步整流否
输出通道数1
拓扑结构升压式
开关管(内置/外置)内置
SY7304DBC产品手册
Applications Information Because of the high integration in SY7304, the application circuit based on this regulator IC is rather simple. Only input capacitor C , output capacitor C , 1) Choose the inductance to provide the desiredripple current. It is suggested to choose the ripplecurrent to be about 40% of the maximumaverageinput current. The inductance is calculated as: VIN 2 (VOUT VIN) IN OUT L (H) inductor L and feedback resistors (R1 and R2) need to be selected for the targeted applications. VOUT FSW IOUT_MAX 40%Feedback resistor divider R1 and R2 Choose R1 and R2 to program the proper output voltage. To minimize the power consumption under light load, it is desirable to choose large resistance values for both R1 and R2. A value between 10k and 1M is recommended for both resistors. If R1=200k is chosen, then R2 can be calculated to be: where FSW is the switching frequency and IOUT_MAXis the maximum load current. SY7304 regulator IC is less sensitive to the ripplecurrent variations. Consequently, the final choice of inductance can be slightly off the calculation valuewithout significantly impacting the performance. R 2 0.6R1 VOUT 0.6 () 2) The saturation current rating of an inductor must be selected to guarantee an adequate margin tothepeak inductor current under full load conditions. VOUT VIN 2 (VOUT VIN) ISAT_MIN IOUT_MAX VIN VOUT 2 FSWLInput capacitor CIN The ripple current through input capacitor is calculated as: 3) The DCR of the inductor and the core loss at theswitching frequency must be lowenoughtoachieve the desired efficiency requirement. It isdesirable to choose an inductor with DCR<10mto achieve a good overall efficiency. ICIN_RMS VIN (VOUT VIN) (A) Enable Operation Pulling the EN pin low (<0.4v) will="" shut="" downthedevice.="" during="" the="" down="" sy7304shut="" current="" drops="" to="" lower="" than="" a.="" driving="" minimize="" potential="" noise="" place="" a="" typical="" x5r="" or="" better="" grade="" ceramic="" capacitor="" really="" close="" in="" and="" gnd="" pins.="" care="" should="" be="" taken="" loop="" area="" formed="" by="" low="" esr="" with="" greater="" 10uf="" capacitance="" is="" recommended.="" output="" cout="" selected="" handle="" ripple="" requirements.="" both="" steady="" state="" transient="" requirements="" must="" into="" account="" when="" selecting="" this="" capacitor.="" for="" best="" it="" recommended="" use="" 22uf="" capacitance.="" boost="" inductor="" l="" there="" are="" several="" considerations="" choosing="" inductor.="" en="" pin="" high="">2V) will turn on the IC again. Rectifier Diode Selection Schottky diode is a good choice for high efficiencyoperation because of its low forward voltage dropandfast reverse recovery. The maximumcurrent ratingof the diode must be higher than maximuminput current. And the average current rating of the diode must behigher than the output current. Layout Design The layout design of SY7304 regulator is highlysimplified. To achieve a higher efficiency and better noise immunity, following components should beplaced close to the IC: CIN, L, R1 and R2. 1) It is desirable to maximize the PCBcopper areaconnecting to GND pin to achieve better thermal
