IR3551MTRPBF International Rectifier, IR3551MTRPBF Datasheet - Page 19

• Manufacturer Part Number: IR3551MTRPBF
• Description: The IR3551 integrated PowIRstage is a synchronous buck gate driver IC with co-packed control and synchronous MOSFETs and Schottky diode.
• Manufacturer: International Rectifier

Specifications of IR3551MTRPBF

• Package: PQFN / 5 x 6
• Iout (a): 50
• Switch Freq (khz): up to 1.0MHz
• Input Range (v): 4.5 - 15
• Output Range (v): 0.25 - (VCC -2.5)

SOLDER RESIST
* Contact International Rectifier to receive an electronic PCB Library file in Cadence Allegro or CAD DXF/DWG format.
 The solder resist should be pulled away from
 The minimum solder resist width is 0.13mm
 At the inside corner of the solder resist where
the metal lead lands by a minimum of 0.06mm.
The solder resist miss-alignment is a maximum
of 0.05mm and it is recommended that the low
power signal lead lands are all Non Solder Mask
Defined (NSMD). Therefore pulling the S/R
0.06mm will always ensure NSMD pads.
typical.
the lead land groups meet, it is recommended
to provide a fillet so a solder resist width of ≥
0.17mm remains.
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March 12, 2012 | FINAL DATASHEET
Figure 34: Solder resist
50A Integrated PowIRstage®
 The dimensions of power land pads, VIN, PGND,
 Ensure that the solder resist in-between the lead
TGND and SW, are Non Solder Mask Defined
(NSMD). The equivalent PCB layout becomes
Solder Mask Defined (SMD) after power shape
routing.
lands and the pad land is ≥ 0.15mm due to the
high aspect ratio of the solder resist strip
separating the lead lands from the pad land.
IR3551