UC1103G-S08-R datasheet(8/9 Pages) UTC

Part #	UC1103G-S08-R

Description	HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR

PDF	9 Pages

Scroll/Zoom	100%

Manufacturer	UTC [Unisonic Technologies]

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

Logo

8 / 9 page

UC1103

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

8 of 9

www.unisonic.com.tw

QW-R502-961.d



OPERATION DESCRIPTION(Cont.)

Gate Output

The UTC UC1103 output stage is a fast totem-pole gate driver. Cross conduction has been avoided to minimize

heat dissipation, increase efficiency, and enhance reliability. The output driver is clamped at 15V to protect power

MOSFET transistors against undesired over-voltage gate signals.

Protection Control

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

over-voltage protection, VDD Clamp, GATE Clamp, Power on soft start, Cycle-by-cycle current limiting, short circuit

protection, leading edge blanking, OTP and UVLO, etc.

VDD is supplied by transformer auxiliary winding output. The output of UTC UC1103 is shutdown when VDD drops

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

UC1103G-S08-R Datasheet(PDF) 8 Page - Unisonic Technologies