MAX15040EWE+T Maxim Integrated Products, MAX15040EWE+T Datasheet - Page 14

• Manufacturer Part Number: MAX15040EWE+T
• Description: DC/DC Switching Controllers 4A Step-Down w/Internal Switch
• Manufacturer: Maxim Integrated Products

Specifications of MAX15040EWE+T

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

High-Efficiency, 4A, Step-Down Regulator with
Integrated Switches in 2mm x 2mm Package
Careful PCB layout is critical to achieve clean and stable
operation. It is highly recommended to duplicate the
MAX15040 evaluation kit layout for optimum performance.
If deviation is necessary, follow these guidelines for good
PCB layout:
1) Connect input and output capacitors to the power
2) Place capacitors on V
3) Keep the high-current paths as short and wide as
4) Connect IN, LX, and GND separately to a large
5) Ensure all feedback connections are short. Place
6) Route high-speed switching nodes, such as LX and
14
PROCESS: BiCMOS
ground plane; connect all other capacitors to the sig-
nal ground plane.
as possible to the device and the corresponding
bump using direct traces. Keep power ground plane
and signal ground plane separate.
possible. Keep the path of switching current short
and minimize the loop area formed by LX, the out-
put capacitors, and the input capacitors.
copper area to help cool the device to further
improve efficiency and long-term reliability.
the feedback resistors and compensation compo-
nents as close to the device as possible.
BST, away from sensitive analog areas (FB, COMP).
______________________________________________________________________________________
PCB Layout Considerations and
DD
Thermal Performance
, IN, and REFIN/SS as close
Chip Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in
the package code indicates RoHS status only. Package draw-
ings may show a different suffix character, but the drawing per-
tains to the package regardless of RoHS status.
PACKAGE
16 WLP
TYPE
(BUMPS ON BOTTOM)
PACKAGE
W162B2+1
PWRGD
GND
BST
LX
A1
B1
C1
D1
CODE
Package Information
GND
I.C.
LX
C2
A2
B2
FB
D2
TOP VIEW
WLP
Pin Configuration
OUTLINE
21-0200
COMP
I.C.
LX
B3
C3
D3
IN
A3
NO.
REFIN/SS
V
A4
EN
C4
D4
B4
IN
DD
PATTERN NO.
LAND
—