RT7272B datasheet(13/15 Pages) RICHTEK

部品番号	RT7272B

部品情報	3A, 36V, 500kHz Synchronous Step-Down Converter

PDF	15 Pages

Scroll/Zoom	100%

メーカー	RICHTEK [Richtek Technology Corporation]

ホームページ	http://www.richtek.com

Logo

13 / 15 page

RT7272B

DS7272B-01

January 2013

www.richtek.com

is a registered trademark of Richtek Technology Corporation.

(a) Copper Area = (2.3 x 2.3) mm2,

θJA = 75°C/W

(b) Copper Area = 10mm2,

θJA = 64°C/W

2 ,

θJA = 54°C/W

(d) Copper Area = 50mm2 ,

θJA = 51°C/W

(e) Copper Area = 70mm2 ,

θJA = 49°C/W

Figure 6. Thermal Resistance vs. Copper Area Layout

Design

Layout Considerations

For best performance of the RT7272B, the following layout

guidelines must be strictly followed.

Input capacitor must be placed as close to the IC as

possible.

SW should be connected to inductor by wide and short

trace. Keep sensitive components away from this trace.

The RL resistor, compensator and feedback components

must be connected as close to the device as possible.

RT7272B データシート(PDF) 13 Page - Richtek Technology Corporation