RT8458D controller equivalent, constant current pwm buck controller.
a 160kHz fixed frequency oscillator, an internal −220mV precision reference, and a PWM comparator with latching logic. The accurate output LED current is achieved by an a.
* E27, PAR30, Offline LED Lights
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Simplified Applic.
The RT8458D is a PWM controller with an internal high side gate driver. Because of the Buck topology, the input voltage for the Buck system is only limited by the voltage rating of the external MOSFET. It is used for step down converters by well cont.
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