IR3640MPBF datasheet(29/32 Pages) IRF

Part #	IR3640MPBF

Description	HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	IRF [International Rectifier]

Direct Link	http://www.irf.com

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29 / 32 page

06/15/2009

IR3640MPBF

PCB Metal and Components Placement

• Lead land width should be equal to nominal part lead width. The minimum lead to lead spacing

should be

≥ 0.2mm to minimize shorting.

• Lead land length should be equal to maximum part lead length + 0.3 mm outboard extension

+0.05mm inboard extension. The outboard extension ensures a large and inspectable toe fillet,

and the inboard extension will accommodate any part misalignment and ensure a fillet.

• Center pad land length and width should be equal to maximum part pad length and width.

However, the minimum metal to metal spacing should be

≥ 0.17mm for 2 oz. Copper (≥ 0.1mm

for 1 oz. Copper and

≥ 0.23mm for 3 oz. Copper).

• Four 0.30mm diameter via shall be placed in the center of the pad land and connected to ground

to minimize the noise effect on the IC.

IR3640MPBF Datasheet(PDF) 29 Page - International Rectifier