UCC1889 Unitrode Semiconductor, UCC1889 Datasheet
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UCC1889
Related parts for UCC1889
UCC1889 Summary of contents
Page 1
... The control algorithm utilized by the UCC1889 is to force the switch on time to be inversely proportional to the input line voltage while the switch off time is made in- versely proportional to the output voltage ...
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... R C OFF S T Regions 1 and 3.7V /(V - 0.7V) OFF OFF T OUT Region 2, excluding the effects of R which have a minimal impact on T equals 9V. The CC increases from approximately 2. charging. To take this into account UCC1889 UCC2889 UCC3889 DCHG S . OFF IN . The voltage UDG-93062-3 ...
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... DCHG CONNECTION DIAGRAM DIL-8, SOIC-8 (Top View Package Unless otherwise stated, these specifications hold for T UCC3889, - +85 C for the UCC2889, and - +125 C for the UCC1889. No load at DRIVE pin (C =0). LOAD TEST CONDITIONS I < ...
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... I does not exceed 5mA (regulated output): The V OUT nected to the power supply output voltage. When V sets the dis- greater than V OFF 4 UCC1889 UCC2889 UCC3889 and T . OUT OFF serves three functions. ON When C is charging (on time), the CC. ...
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... TYPICAL WAVEFORMS 5 UCC1889 UCC2889 UCC3889 ...
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... UNITRODE INTEGRATED CIRCUITS 7 CONTINENTAL BLVD. MERRIMACK, NH 03054 TEL. 603-424-2410 FAX 603-424-3460 6 UCC1889 UCC2889 UCC3889 ...