Rainbow-electronics MAX1842 Manual do Utilizador descarregar pdf (Página 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

SHDN LX

PGND

FBSEL

REF

GND

TOP VIEW

MAX1742

MAX1842

QSOP

COMP

TOFF

Pin Configuration

1 2 ... 10 11 12 13 14 15 16

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Rainbow-electronics MAX1842 Manual do Utilizador Página 15