OB2500P is a high performance offline PSR power switch for low power AC/DC charger and adapter applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below. In CC control, the current and output power setting can be adjusted externally by the sense resistor Rs at CS pin. In CV control, multi-mode operations are utilized to achieve high performance and high efficiency. In addition, good load regulation is achieved by the built-in cable drop compensation. Device operates in PFM in CC mode at large load condition and it operates in PWM with frequency reduction at light/medium load. The chip consumes very low operation current. It achieves less than 75mW standby power to meet strict standby power standard. OB2500P offers comprehensive protection coverage with auto-recovery feature including Cycle-by-Cycle current limiting, VDD over voltage protection, feedback loop open protection, short circuit protection, built-in leading edge blanking, VDD under voltage lockout (UVLO), OTP etc. OB2500P is offered in SOP7 packages. OB2500P是一款**離線PSR電源開關,適用于低功率AC / DC充電器和適配器應用。它在初級端感測和調(diào)節(jié)中運行。因此,可以省去光耦和TL431。如下圖所示,集成了專有的恒定電壓(CV)和恒定電流(CC)控制。 在CC控制中,可以通過CS引腳上的檢測電阻Rs在外部調(diào)整電流和輸出功率設置。在CV控制中,利用多模式操作來實現(xiàn)**和**。此外,內(nèi)置的電纜壓降補償可實現(xiàn)良好的負載調(diào)節(jié)。器件在大負載條件下以CC模式在PFM下運行,并且在頻率下以PWM運行 在輕/中載時降低。該芯片消耗非常低的工作電流。它的待機功率**75mW,可以滿足嚴格的待機功率標準。 OB2500P具有自動恢復功能,可提供全面的保護范圍,包括逐周期電流限制,VDD過壓保護,反饋環(huán)路開路保護,短路保護,內(nèi)置*消隱,VDD欠壓鎖定(UVLO),OTP等。 OB2500P采用SOP7封裝。 OB2500POP 自動恢復 普通 100KHz(Max) DCM/PFM PSR(內(nèi)置MOS) 12W以內(nèi) 75mW SOP-8 配同步整流* 深圳市豐寶騰科技有限公司(Fung Proton Technology)始創(chuàng)于2008年,注冊于深圳特區(qū)。豐寶騰科技運營中心設半導體事業(yè)部和電子方案研發(fā)事業(yè)部;目標成為客戶全球較具*的半導體器件代理商與服務供應商。 半導體事業(yè)部以代理銷售電源管理IC(LDO、DC/DC、鋰電管理、AC/DC等)、二三管、高低壓MOS管、CooLMOS及保險絲為主,現(xiàn)擁有昂寶電子(on-bright)、、芯脈科技(chipmost)、南京微盟(Microne)、聚洵半導體(Gainsil);臺灣強茂(Panjit)、 廣東鉅興(Trr-jx);無錫新潔能(Ncepower)、深愛半導體(Sisemi)等產(chǎn)品的代理權。豐寶騰科技致力于為客戶提供完整的電子解決方案和產(chǎn)品配套服務。