EG3844

高性价比电流模式PWM控制器适用于正激和反激电源; • 优良的 EMI 特性\n\n\n\n• 外围器件少\n\n\n\n• 光耦开路保护\n\n\n\n• 最大占空比 50%\n\n\n\n• 电流模式控制\n\n\n\n• 外置电阻可设 PWM 频率\n\n\n\n• 绿色模式和打嗝模式控制\n\n\n\n• 逐周期电流限制\n\n\n\n• 内置前沿消隐\n\n\n\n• 内置斜坡补偿\n\n\n\n• 低启动电流\n\n\n\n• 输出最高钳位\n\n\n\n• 封装形式 SOP8、DIP8;

是一款高性价比电流模式 PWM 控制器，适合于中、大等功率反激电源方案以及正激电源方案。内置抖频功能，具有优良的 EMI 特性。芯片采用绿色节能模式和打嗝模式控制轻负载和零负载。内置有完备的保护功能：VCC 欠压保护（UVLO）、VCC 过压保护（VOP）、逐周期电流限制、过载保护、过热保护、软启动等

E-UC3844BN

HIGHPERFORMANCECURRENTMODEPWMCONTROLLER

DESCRIPTION TheUC384xBfamilyofcontrolICsprovidesthenecessaryfeaturestoimplementoff-lineorDCtoDCfixedfrequencycurrentmodecontrolschemeswithaminimalexternalpartscount.InternallyimplementedcircuitsincludeatrimmedoscillatorforpreciseDUTYCYCLECONTROLundervolta

GM3844A

HIGHPERFORMANCECURRENTMODEPWMCONTROLLERS

Description GM384XAseriesishighperformancewithfixedfrequencycurrentmodePWMcontrollers.Theyarespeciallydesignedforoff-LineandDC-to-DCconverterapplicationswithminimumexternalcomponents.Thesedevicesfeatureatrimmedoscillatorforprecisedutycyclecontrol,atemperature

GM3844A

CURRENTMODEPWMCONTROLLER

IP3844

CURRENTMODEREGULATINGPULSEWIDTHMODULATORS

IP3844A

CURRENTMODEREGULATINGPULSEWIDTHMODULATORS

KA3844

fixedfrequencycurrentmodePWMcontroller

Description The3842A(AM)/43A(AM)/44A(AM)/45A(AM)arefixedfrequencycurrentmodePWMcontroller.TheyarespeciallydesignedforOFF−LineandDCtoDCconverterapplicationswithaminimalexternalcomponents.Internallyimplementedcircuitsincludeatrimmedoscillatorforprecisedutycycle

KA3844

CurrentModePWMController

DESCRIPTION KA3842/43/44/45arefixedfrequencycurrentmodePWM controller.TheyarespeciallydesignedforOFF−LineandDCtoDCconverterapplications withaminimalexternalcomponents.Internallyimplementedcircuitsincludeatrimmed oscillatorforprecisedutycyclecontrol,atemperatu

KA3844B

SMPSController

TheKA3842B/KA3843B/KA3844B/KA3845Barefixedfrequencycurrent-modePWMcontroller.TheyarespeciallydesignedforOff-LineandDC-to-DCconverterapplicationswithminimumexternalcomponents.Theseintegratedcircuitsfeatureatrimmedoscillatorforprecisedutycyclecontrol,atemperatu

KA3844B

SMPSController