UCC36351

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 7

www.unisonic.com.tw

QW-R115-012.B

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PIN CONFIGURATION

1

2

3

4

8

7

6

5

BS

SW

SW

PGND

IN

GND

CS

GND

FB

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PIN DESCRIPTION

PIN NO.

PIN NAME

DESCRIPTION

1

BS

Boot-Strap Pin. Supply high side gate driver. Decouple this pin to LX pin with

24ohm+0.1uF ceramic cap.

2

IN

Power Input pin. Bypass IN to GND with a suitably large capacitor to eliminate noise on

the input to the IC.

3

SW

Power Switching Output. SW is the switching node that supplies power to the output.

Connect the output LC filter from SW to the output load.

4

PGND

Power Ground.

5

FB

Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a

resistive voltage divider from the output voltage.

6

CS

The Current Sense pin.

7, 8

GND

Ground.

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BLOCK DIAGRAM