UC3973 controller equivalent, pwm controller.
* UTC proprietary frequency hopping technology for Improved EMI performance. * Power-saving mode for high light-load and standby efficiency * Soft Start * Dynamic peak c.
as: battery charger, power adaptor, set-top box power supplies, ink jet printers, open-frame SMPS.
* FEATURES
* UT.
The UC3973 is a high performance current mode PWM controller ideally suited for low standby power. Low VDD startup current make the power reliable on startup design and a large value resistor could be used in the startup circuit to minimize the stan.
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