Description
The LR5920 is a current mode PWM switching power supply
controller that specifically designed for AC/DC converter with high
perfo rmance versus cost ratio.It provides continuo us output power up to 12W in the bro ad voltage range o f 8 5V
265V.Its o ptimized and highly reaso nable circuit design has made it po ssible to minimize the total cost of the pro duct.
Features
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Built-in 750V high voltage power switching tube with minimal
external parts count
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Latched P WM and pulse - by - pulse current limiting inspection Reduced frequency at low o utput with standby po wer consumption
below 0.25W Built-in slope and feedback compensation function Separate upper limit current inspectio n co ntroller to handle timely
flyback circuit topology to constitute simp le AC/DC converter. The
internal initiating circuit of 5920 has been designed with a uniq ue.
LR5920_LeshanRadioCompany.pdf
