L6668 controller equivalent, smart primary controller.
Figure 1. Package
MULTIPOWER BCD TECHNOLOGY LOAD-DEPENDENT CURRENT-MODE CONTROL: FIXED-FREQUENCY (HEAVY LOAD), FREQUENCY FOLDBACK (LIGHT LOAD), BURST-MODE (NO-LOAD)
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HI-END AC-DC ADAPTERS/CHARGERS FOR NOTEBOOKS. LCD/CRT MONITORS, LCD/CRT TV DIGITAL CONSUMER
V CC 5
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L6668 is a current-mode primary controller IC, designed to build single-ended converters. The IC drives the system at fixed frequency at heavy load and an improved Standby function causes a smooth frequency reduction as the load is progressively red.
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