SS6383BCSTR datasheet(6/8 Pages) SSC

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SS6383B(G)

11/07/2004 Rev.2.01

PIN DESCRIPTIONS (Pin numbers refer to TO-252/263)

PIN 1:

VIN

- Input supply pin. It provides

main

power

create

the

external reference voltage by

divider resistors for regulating

VREF and VOUT.

PIN 2:

GND

- Ground pin.

PIN 3:

VCNTL - Input supply pin. It is used to

supply all the internal control

circuitry.

PIN 4:

VREF - Reference voltage input. Pull

this pin low to shutdown device.

PIN 5:

VOUT - Output pin.

APPLICATION INFORMATION

Layout Consideration

As the SS6383B is in either SO-8, TO-252-5 or

TO-263-5 packages, it is unable to dissipate heat

easily when it operates at high current. To avoid

exceeding the maximum junction temperature,

a suitable copper area must be used.

The large copper area shown at VCNTL pins is

able to relieve the thermal dissipation. Using the

via to direct heat into the large copper area shown

on the bottom layer also helps significantly.

All capacitors should be placed as close as

possible to the relevant pins.

Fig. 9 Top layer for SO-8

Fig. 10 Bottom layer for SO-8

Fig. 11 Placement for SO-8

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