Technical Reference Note (APC08)

MODEL: APC08 SERIES

SHEET 7 OF 23

OCTOBER 4, 2004 - REVISION 03

Basic Operation and Features

The APC08 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 APC08x03 versions allow 1.8V to 6V input voltage and the

APC08x08 versions allow a 5V to 12V 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

When ordered with no options, the module comes with only 4 pins – Vin, Gnd, Vout and Enable – and is compatible

with other leading manufacturer’s footprint. The PGood, Active Current Share, and Trim pins are options that can be

ordered with any model number. For the optional trim function add a (-9) to the end of the standard part number. For

the optional current share and PGood signal in addition to the trim function, add (-9MA) to the end of the part

number. Please refer to the Part Number Ordering Scheme section.

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 applications note.

Figure 1. Pin Assignment Viewed from Top of Board.

Current

Share

Enable

Trim

PGood