USRB02 datasheet(6/7 Pages) UTC

Teilenummer	USRB02

Bauteilbeschribung	HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

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Hersteller	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

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USRB02

Preliminary

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LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

6 of 7

www.unisonic.com.tw

QW-R103-087.a



OPERATION DESCRIPTION (Cont.)

Protection Control

Good power supply system reliability is achieved with its comprehensive protection features including VDD over

voltage protection, Output over voltage protection, OTP, feedback loop open protection, Cycle-by-cycle current

limiting, short circuit protection, leading edge blanking and UVLO, etc.

VDD is supplied by transformer auxiliary winding output. The output of UTC USRB02 is shutdown when VDD drops

below VTH(OFF) and the power converter enters power on start-up sequence thereafter.

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