IR3897MTRPBF International Rectifier, IR3897MTRPBF Datasheet - Page 40

• Manufacturer Part Number: IR3897MTRPBF
• Description: 4A Highly Integrated Single-Input Voltage, Synchronous Buck Regulator in a PQFN package.
• Manufacturer: International Rectifier

Specifications of IR3897MTRPBF

• Part Status: Active and Preferred
• Package: PQFN / 4 x 5
• Circuit: Single Output
• Iout (a): 4
• Switch Freq (khz): 0 - 1500
• Input Range (v): 1.0 - 16
• Output Range (v): 0.5 - 12
• Pbf: PbF Option Available

SOLDER RESIST
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 IR recommends that the larger Power or Land
 When using SMD pads, the underlying copper
Area pads are Solder Mask Defined (SMD.)
This allows the underlying Copper traces to be as
large as possible, which helps in terms of current
carrying capability and device cooling capability.
traces should be at least 0.05mm larger (on each
edge) than the Solder Mask window, in order to
accommodate any layer to layer misalignment.
(i.e. 0.1mm in X & Y.)
40
FEBRUARY 02, 2012 |DATA SHEET | Rev 3.2
Single‐Input Voltage, Synchronous Buck Regulator
Figure 48: Solder resist
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4A Highly Integrated SupIRBuck
 However, for the smaller Signal type leads around
 When using NSMD pads, the Solder Resist
 Ensure that the solder resist in‐between the
the edge of the device, IR recommends that these
are Non Solder Mask Defined or Copper Defined.
Window should be larger than the Copper Pad
by at least 0.025mm on each edge, (i.e. 0.05mm
in X&Y,) in order to accommodate any layer to
layer misalignment.
smaller signal lead areas are at least 0.15mm
wide, due to the high x/y aspect ratio of the
solder mask strip.
TM
IR3897
PD‐97663