UCC3809-1 controller equivalent, economy primary side controller.
* User Programmable Soft Start With
Active Low Shutdown
* User Programmable Maximum Duty Cycle
* Accessible 5V Reference
* Undervoltage Lockout
* Oper.
where board space and height are at a premium.
TYPICAL APPLICATION DIAGRAM
RS TART VIN
FEEDBACK
CURRENT S ENS E
S LOP.
The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Inter.
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