Technical Reference Notes

APC12 Centauri II

MODEL: APC12 SERIES

SHEET 7 OF 23

JANUARY 6, 2002 REVISION A (PRELIMINARY)

Basic Operation and Features

The APC08/12 Centauri family was designed specifically to address applications where on board distributed power with Point-

of-Load Converters (Conversion needed as close to the IC, usually DSP’s and ASIC’s) is employed. With its wide range input

and flexible programmable output, any change in the load becomes very manageable with little to no impact on time to market.

All of the converters in this family are buck converters. The APC12x03 versions allow 1.8V to 6V input voltage and the

APC12x08 versions allow a 5.6V to 13V input with 14V max surge.

MODULE PIN ASSIGNMENT

There are 4 to 7 surface mount pins on a Centauri module. The availability of pins from individual modules is relevant

to its version / selected option.

PIN #

DESIGNATION

P1

Input Voltage

P2

Output Voltage

P3

GND

Common Ground

P4

TRIM

Output Voltage Adjustment [OPTION]

P5

ENABLE

Output Voltage Enable

P6

PGood

Power Good [OPTION]

P7

P

Load Current Active Sharing [OPTION]

INDUSTRY STANDARD PINOUT

COMPATIBLE WITH OTHER LEADING MANUFACTURER’s FOOTPRINT. When the full-featured module is

required: with Output Trim; Active Current Share and Power Good Signal PINs, “-9MA” suffix is added to the

standard part number. Please refer to the Part Number Ordering Scheme for other options (including packaging).

Note: When using the trim function, this module offers much more trim flexibility than the competitive footprint and also

requires a jumper between the two footprints to be source compatible. Contact Factory for details.

Figure 1. Pin Assignment Viewed from Top of Board.

Current

Share

Enable

Trim

PGood