Fairchild Semiconductor KA3882
The KA3882 and KA3884 have UVLO threshold of 1 6V(on) and 10V(off). The KA3883 and KA3885 are 8.4V(on) and 7.6V(off). The KA3882 and KA3883 can operate within 100% duty cycle.FEATURES
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● Low Start Current 0.2mA (typ) Operating Range Up To 500KHz Cycle by Cycle Current Limiting Under Voltage Lock Out With Hysteresis Short Shutdown Delay Time: typ.100ns High Current Totempole Output Output Swing Limiting: 22V ORDERING INFORMATION Device KA388X KA388XD Package 8 DIP 8 SOP Operating Temperature 0 ~ + 85 0 ~ + 85 Î Î BLOCK DIAGRAM Rev. B ©1999 Fairchild Semiconductor Corporation KA3882/3/4/5 SMPS CONTROLLER
ABSOLUTE MAXIMUM RATINGS
Characteristic Supply Voltage Output Current Analog Inputs (pin 2, 3) Error Amp. Output Sink Current Power Dissipation Symbol VCC IO VI(ANA) ISINK(EA) PD Value 30 +1 - 0.3 to 6.3 10 1 Unit V A V mA WELECTRICAL CHARACTERISTICS
(VCC = 15V, RT = 10K `, C T = 3.3nF, T A = 0 Îto + 85Î, Unless otherwise specified) Symbol Test Conditions Min Typ Max Unit Characteristic REFERENCE SECTION Output Voltage Line Regulation Load Regulation Output Short Circuit OSILLATOR SECTION Initial Accuracy Voltage Stability Amplitude Discharge Curr...