Rainbow Electronics MAX1842 - Manual (Page 15)

MAX1742/MAX1842
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
______________________________________________________________________________________ 15
3) Place the LX node components as close together
and as near to the device as possible. This reduces
resistive and switching losses as well as noise.
4) A ground plane is essential for optimum perfor-
mance. In most applications, the circuit is located on
a multilayer board, and full use of the four or more
layers is recommended. Use the top and bottom lay-
ers for interconnections and the inner layers for an
uninterrupted ground plane. Avoid large AC currents
through the ground plane.
Chip Information
TRANSISTOR COUNT: 3662
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
SHDN LX
PGND
LX
PGND
V CC
FBSEL
REF
GND
TOP VIEW
MAX1742
MAX1842
QSOP
IN
LX
COMP
IN
SS
TOFF
FB
Pin Configuration