RT9703GS datasheet(13/14 Pages) RICHTEK

Part #	RT9703GS

Description	80m廓, 3A Smart Universal Power Switch with Flag

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	RICHTEK [Richtek Technology Corporation]

Direct Link	http://www.richtek.com

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13 / 14 page

RT9703

DS9703-08 March 2007

www.richtek.com

Fault Flag Filtering (Optional)

The transient inrush current to downstream capacitance

may cause a short-duration error flag, which may cause

erroneous over-current reporting. A simple 1ms RC low-

pass filter (10k

Ω and 0.1μF) in the flag line eliminates

short-duration transients.

PCB Layout

In order to meet the voltage drop, droop, and EMI

requirements, careful PCB layout is necessary. The

following guidelines must be considered:

Keep all input and output traces as short as possible

and use at least 150-mil & 2 ounce copper for all races.

Avoid vias as much as possible. If vias are necessary,

make them as large as feasible.

Place a ground plane under all circuitry to lower both

resistance and inductance and improve DC and transient

performance (Use a separate ground and power plans

if possible).

Locate the bypass capacitors as close as possible to

the input and output pin of the RT9703.

GND

VOUT

VIN

FLG

GND

Board Layout

RT9703GS Datasheet(PDF) 13 Page - Richtek Technology Corporation