VLF10045 datasheet(13/15 Pages) RICHTEK

номер детали	VLF10045

подробное описание детали	RT7237C

PDF	15 Pages

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производитель	RICHTEK [Richtek Technology Corporation]

домашняя страница	http://www.richtek.com

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RT7237C

DS7237C-04

November 2012

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 = 70mm

2 ,

θJA = 49°C/W

Figure 6. Thermal Resistance vs. Copper Area Layout

Design

Layout Consideration

Follow the PCB layout guidelines for optimal performance

of the RT7237C.

Keep the traces of the main current paths as short and

wide as possible.

Put the input capacitor as close as possible to the device

pins (VIN and GND).

SW node is with high frequency voltage swing and

should be kept at small area. Keep analog components

away from the SW node to prevent stray capacitive noise

pick-up.

Connect feedback network behind the output capacitors.

Keep the loop area small. Place the feedback

components near the RT7237C.

An example of PCB layout guide is shown in Figure 8

for reference.

VLF10045 датащи(PDF) 13 Page - Richtek Technology Corporation